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Page 1: /home/anna/work/TESI/latex/main · Title /home/anna/work/TESI/latex/main.dvi Created Date: 7/30/2004 3:05:38 AM

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � �� � � � � � � � � � � � � � � � � � � � � � � � � � � � ! � � " # � � �

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g [ Z Z b c V Y Y d h [ i [ j j f ` Z [

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Page 2: /home/anna/work/TESI/latex/main · Title /home/anna/work/TESI/latex/main.dvi Created Date: 7/30/2004 3:05:38 AM

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Page 3: /home/anna/work/TESI/latex/main · Title /home/anna/work/TESI/latex/main.dvi Created Date: 7/30/2004 3:05:38 AM

� � � � � � � � � � � � �

( ] ] , ) . . + + * + 0 � � 0 � ^ 0 / , - 0 ^ 0 ) � ^ , � 0 , ^ . � * ^ ^ . 0 � + � � , ^ / 0 � � . ^ S � S S . ] . � * ] S . + � . � * ) * � S , S ,

0 ) S ^ , S S , � 0 ] . � . ) * ) � * ) * � S , S . � * + � . 0 ) � � . � S 0 + 0 ) � � . , ) ) 0 � . + � . ) * ) � * ) *^ 0 � � + 0 S , , S ^ * � , ^ . � ) / 0 ) � S * - , - . - 0 + , ^ . , 0 / 0 . 0 , / 0 + 0

� ^ , � 0 . � � ) � ^ , � 0 . � , , ] ] , / 0 , � , / 0 � ] 0 , � R , ^ ] , � � . ^ ] , � , � 0 , ) � , + � . � , � . / �� ^ . , � � S * + * ) / . . 0 ] S . / � * + � . / 0 � , - . - 0 + , S * � � * ] * ^ . � � � . ^ + � �. , / * - * � � */ 0 � , � , S S * - , � . + * ) - , / , / / , � � ) � * ^ * / � 0 , � * ] S . � + * / . * � ) 0 / , / / ,+ � . � 0 ^ 0 � � . S S 0 � � ! 0 + + * � � ) � ^ , ) � ^ , S . ] ] * + � . � * � * S � S * + * ) * � + . ^ . - 0 ) � * � * ) . ] ] .) * S S 0 � , ] S 0 / * ^ . � 0 � / 0 , / , / / , � / 0 � , � * � S . ) � S * 0 ) / * ] S . - . ] ] . / 0 . � + . ] S . � / 0 *� , � , � 0 ) / * - * � � . � � * * � + � ^ * . + * ) S ^ , - - 0 S S * ^ 0 * / 0 � , - 0 / * � S ^ , S * � ) , / * ^ .� ^ , ) - 0 � � 0 / *

" + * / . - 0 / . ) S 0 + , ^ . 0 / 0 . 0 , / 0 + 0 # $ * ] * - 0 ^ . + . ) S . � * + , � 0 S * � � , ) S * � 0 , ) *0 / � * ^ S , ) S 0 � . ^ / . . - 0 � � , ) S * � 0 , - 0 % + 0 ] . , � . ^ . - . 0 � . ^ 0 , / 0 + 0 & , � � ' � � ^ , � 0 .� . ^ , � . ^ / 0 + , � � 0 , S * . - , S * � * ^ � , 0 ) � 0 . / . S � S S . ] . � * ] S . + � . / 0 � , 0 � 0 � S * , � . � � 0� . - 0 , � . ^ ^ 0 � � * � S * , ] S . ] . � * ) * � � , ) - * � ) , � , � � , � � ^ 0 * � , S 0 � , + � 0 , / , S * , ] ] .� . 0 - . ] / , S S 0 ) * �

� 0 , ) ) 0 � � ^ 0 / , * � * 0 S . ] * � , ^ , ) ) * � ) / * ) � / . ) S * ( ( $ . ) � , - 0 S . � ^ * � , � 0 ] �

Page 4: /home/anna/work/TESI/latex/main · Title /home/anna/work/TESI/latex/main.dvi Created Date: 7/30/2004 3:05:38 AM

/ . ) S . * � � 0 ) * ) � S , ^ . 0 � + ^ 0 � . ) - * � � . � S , � , � 0 ) , � � 0 + + 0 * ) 0 - . ] ] , � 0 + + 0 * ) , 0 , � � � , + � � � . ] � � 0 , ) ] � + , � 0 � . - . ] 0 � � 0 / 0 � � . / � ^ .

, ^ , ] ] . � ^ , ^ . ] , S / * � � . ^ , � . � � � , ] S 0 . ^ * � � + * � , , � ^ . 0 � , S S * � . ) � , - 0 S . ( ! . � � � ) */ 0 � , , � + * ] S , ^ . + * / . � , 0 S � � � � . - . ^ 0 + , � R ^ 0 � S 0 ) , � � � 0 � � � � � ! . / * � � ( ] . � � 0 * .S , ) S 0 , ] S ^ 0

� ] 0 � + * ) � * ] S 0 - . ] � 4 � � � 0 * & , � � ' � � 0 , $ S . � , ) 0 , � � 0 , � . � � ' . ] , ) . * S ,& , ^ 0 ) ,

� ] 0 , / 0 + 0 � � , � 0 � , ) 0 . � S ^ , � � � $ � � $ , ^ , � � . / � ^ . + * / � ^ . ) � 0 � , + * ) / . . � )� * / . ) * + * ) � ] 0 , ] S ^ 0 � � & , ^ S , � � , ) 0 . ] , � � , � 0 * . � 0 * ^ � 0 *

� ) , � � ^ , + + 0 * , - 0 � S , ) � , , 0 � , ] S 0 / * ^ . � 0 - 0 � , S S * . - 0 , - * � 0 * ) . � � , � ^ 0 � 0 ,� + * � , , � ^ . 0 � , S S * � . ) � , 0 ] S � * , 0 � S * . ] , S � , , / 0 + 0 � 0 , ( � � & , ^ � � 0 � ^ * + � . ) * )- 0 / . ) S 0 + � . ^ * ] . S � . ] . � 0 * ) 0 - 0 + ] 0 / � 0 ) � � . � 0 � ] 0 , ) , � ) * ) S 0 ^ 0 ) � ^ , � 0 . ^ * / , 0, � � , � S , ) � , �

� ) ) . � ) ^ 0 ) � ^ , � 0 , / . ) S * � , ^ S 0 + * ] , ^ . , & , � � 0 / * � � . ^ S . ^ * . � , S ^ 0 � 0 , + � ./ 0 � , ) ) * � * � S . ) � S * ] � ) � * ] � ] S 0 / * S ^ , S S * - 0 � S ^ , - ,

" � . ^ S � S S 0 � � . ] ] 0 + � . � , ) ) * � 0 � ) 0 + , S * � � , ] + * � , ) . ] ] , / 0 , � 0 S , . ) . � , ) ) *� . � ) , S * 0 ] + * ^ � * � � \ ( � � "

Page 5: /home/anna/work/TESI/latex/main · Title /home/anna/work/TESI/latex/main.dvi Created Date: 7/30/2004 3:05:38 AM

� � � � � �

� U Z ` [ � X � d [ U f �

� � Y Y f ` � V � d [ U d V Y Z ` [ U [ h d l f U f � d U a ` V ` [ Y Y [ Z f ` h d l [ �1 1 R * � . ] 0 ) � ^ , ^ * � � * S . ^ / 0 + *

1 1 1 � , + � ^ * � ) - . ) * 0 � . ) . ] ] . 0 / / , � 0 ) 0 , � S ^ * ) * / 0 + � . �1 4 � . + ) 0 + � . , ] ] 0 ) � ^ , ^ * � � * � � . ^ + � �. # 1 51 � � . + ) 0 + � . - 0 � � � � � � � � � � � � � � � � � � 1 41 \ 0 � � ] S , S 0 * S S . ) � S 0 + * ) S , ] 0 S . + ) 0 + � . 1 �1 � � ^ * � ] . / 0 - , , � ^ * ) S , ^ . 1 �

� � h m [ Y Z V � d [ U f h V Z f h V Z d l V � f m ` [ j f h V f d h m f h f U Z V � d [ U f� f � V � [ ` d Z h [ � �4 1 � ) S ^ * - � � 0 * ) . , ] ] , ] � * ^ 0 S / * 4 �4 4 & * - . ] ] 0 � � , � 0 * ) . / , S . / , S 0 + , 4 24 � � ] / . S * - * - 0 ) � . ^ � 0 * ) . � �

4 � 1 & . S * - * - 0 � , ) - � . � . ^ + * ) � * � 0 S 0 � 0 S , � �

4 � 4 � ^ * � ^ 0 . S , - . ] / . S * - * � 4 � � R ^ 0 S . ^ 0 - 0 � S * � � �

� T m m d l V � d [ U f V l V Y [ � f V � f j X [ Y V � d � ` d [ U f � �

Page 6: /home/anna/work/TESI/latex/main · Title /home/anna/work/TESI/latex/main.dvi Created Date: 7/30/2004 3:05:38 AM

� 1 � ^ . � . ) S , � 0 * ) . - . 0 - , S 0 � 2� 4 � � � . ^ � , � 0 * ) 0 1� � � ^ . � � ^ * + . � � 0 ) � - . 0 - , S 0 �� � . + ) 0 + � . - 0 / * � , 0 + * �

� 1 R ^ . , � 0 * ) . - 0 / * � , 0 + 0 �� 4 & . S * - * ] * � 0 . - 0 / * � , 0 + * � 1

� � � ) � . ^ � 0 * ) . � �

� � R * / � 0 ) , � 0 * ) . - . 0 - , S 0 � �

� i d Y X Z V Z d f l [ U l X Y d [ U d � �

1 � ^ . + . - . ) S 0 ^ 0 � � ] S , S 0 � 2 4 � . � 0 * ) 0 0 / � , ^ , S . � �

� � ^ 0 ) + 0 � , ] 0 ^ 0 � � ] S , S 0 , � S ^ * ) * / 0 + 0 �

� _ ` [ Y m f Z Z d � f m f ` d a X Z X ` [ � �

� 1 � ^ . / . � � , � �� 4 $ � 0 ] � � � * 0 / , � 0 ) � � \ S . ^ / 0 + * - , ] ] * � � , � 0 * � �

T m m f U � d l f � �

T T � [ ` d Z h d h V Z f h V Z d l d X Z d d � � V Z d � �( 1 & . S * S * 0 S . ^ , S 0 � * - 0 � , ) - � . � . ^ � � ^ 0 - / , ) � 1( 4 � . + * / � * � 0 � 0 * ) . 0 ) � , ] * ^ 0 � 0 ) � * ] , ^ 0 - 0 � ) , / , S ^ 0 + . � �

e W [ � d l f m ` [ � [ Z Z [ � �� 1 � ^ * + . - � ^ , - 0 + ] . , ) 0 ) � � . ^ � � � � � � � � � �� 4 � ^ * + . - � ^ . - 0 + ] . , ) 0 ) � � . ^ � � � � � � � � � � � � � � � � 2� � � ^ * + . - � ^ , - 0 + ] . , ) 0 ) � � . ^ � � � � � � � � � � � � � � � � � � � � 5� � ^ * + . - � ^ , - 0 + ] . , ) 0 ) � � . ^ � � � � � � � � � � � 1

Page 7: /home/anna/work/TESI/latex/main · Title /home/anna/work/TESI/latex/main.dvi Created Date: 7/30/2004 3:05:38 AM

� � � ^ * + . - � ^ , + � . 0 / � ] . / . ) S , ] , ] � * ^ 0 S / * - 0 0 ) � . ^ � 0 * ) . � �

e d j d [ � ` V � V � �

Page 8: /home/anna/work/TESI/latex/main · Title /home/anna/work/TESI/latex/main.dvi Created Date: 7/30/2004 3:05:38 AM
Page 9: /home/anna/work/TESI/latex/main · Title /home/anna/work/TESI/latex/main.dvi Created Date: 7/30/2004 3:05:38 AM

� � � � � � � � � � �

� . * � � . ^ � , � 0 * ) 0 , � S ^ * ) * / 0 + � . , ] � ) � � . � � . - * ) - , ) . ] ] 0 ) � ^ , ^ * � � * � � � 4 � � � �+ 0 � . ^ / . S S * ) * - 0 � S � - 0 , ^ . + * ^ � 0 + . ] . � S 0 ) . ] ] . � ^ 0 / . � , � 0 - . ] ] * ^ * � � 0 ] � � � * � � � , ) �- * � + 0 * . � � * ) * , ) + * ^ , S ^ * � � * � � ^ . - - 0 � � . ^ . / . S S . ^ . . ) . ^ � 0 , ) . ] � � 0 � 0 � 0 ] . � � ! . ]+ 0 . ] * � 0 ) � , S S 0 � + 0 � * ) * + * ^ � 0 + � . . / . S S * ) * . ) . ^ � 0 , 0 ) - 0 � . ^ � . ] � ) � � . � � . - * ) - , �� * � � 0 , / * � � - - 0 � 0 - . ^ . 0 � * � � 0 � 0 ] 0 � � . S S ^ 0 0 ) - � . � ^ � � � 0 � � ^ . � � . ) � . ) . ] � 0 � 0 � 0 ] .� + * ^ ^ 0 � � * ) - . ) S 0 , + * ^ � 0 + , ] - 0 � . � ^ . � � . ) � . * ] S ^ . 0 ] � 0 � 0 � 0 ] . � + � . + * ^ ^ 0 � � * ) - * ) *, * � � . S S 0 � 0 � � ^ . - - 0 � � � . ] ] . ) . ] � ^ 0 / * � ^ � � � * � ) * , 5 � � � � 0 ) - 0 + , ) * + � . ] ,� * ^ � . ) S . . � 0 � 0 � 0 ] . ) . ] ] * S S 0 + * � � . ] * � � . S S * 0 ) � � . � S 0 * ) . . , � � , � S , ) � , � ^ , ) - .. � 0 + 0 ) * � , ^ , � * � � 0 � 0 ] . � . - . ^ ] * , * + + � 0 * ) � - * 0 ) � ) , ) * S S . � . ^ . ) , � , ] S ^ 0 / . ) S 0� , ^ , ) . + . � � , ^ 0 * ] , � � 0 ] 0 * - 0 � ) S . ] . � + * � 0 * * S S 0 + * � + 0 * . + � . * � . ^ , ) . ] � 0 � 0 � 0 ] . � � ] 0 * � � . S S 0 + � . . / . S S * ) * . ) . ^ � 0 , ) . ] ] 0 ) � ^ , ^ * � � * � 0 ) � 0 � 0 � 0 ] 0 , ] ] * + + � 0 * � / , ) * �+ * ^ ^ 0 � � * ) - * ) * , + * ^ � 0 + . ] . � S 0 , � � , � S , ) � , � ^ . - - 0 � + * / . � S . ] ] . , 0 � ^ 0 / 0 � S , - 0- . ] ] * � � 0 ] � � � * � � . ^ � . - . ^ ] 0 . ) . + . � � , ^ 0 * ] � � * - 0 , � � * � 0 S 0 ^ 0 � . ] , S * ^ 0 - 0 � . � �) , ] . ) . ] ] 0 ) � ^ , ^ * � � * � � ^ S ^ * � � * , � � . � S . � ^ . � � . ) � . 0 ] � . � ) , ] . - . 0 + * ^ � 0 + . ] . � S 0� 0 � * / / , . + * ) � * ) - . + * ) 0 ] � � � � * - . ] � � � � � � � � � ) , ] S ^ . � , ^ * ] . . + * / .� . ] * � � . ^ � , S * ^ . � 0 / . S S . � � . - . � ] 0 * + + � 0 , ] 0 � � . + 0 , ] 0 � . ) � 0 � 0 ] 0 � * ] * , � , ^ S 0 + * ] , ^ 0� * ) S 0 - 0 . ) . ^ � 0 , � � � , ^ - , ) - * 0 ] + 0 . ] * 0 ) � � . � S * / * - * . � ] 0 � . - . , ] + � ) . � S . ] ] . + � .� . ) � , * + + � 0 , ] 0 ) * ) � . - ^ . � � . . ) * ) ) . � . - . , ] S ^ . � 0 � 0 � 0 ] 0 , * + + � 0 * ) � - * ,� . ^ * � ) � ^ * � � * � ^ * � ] . / , � ] 0 ) S . ^ * + 0 . ] * � � 0 � S * , S S ^ , � . ^ � * � � . � S . ] . ) S 0 � � . + 0 , ] 0 �

Page 10: /home/anna/work/TESI/latex/main · Title /home/anna/work/TESI/latex/main.dvi Created Date: 7/30/2004 3:05:38 AM

, � � , ^ . + * / . � * � � . � 0 . ) * � 0 * ^ ) * . + 0 � * � � . 0 ] � * ] . � ] � / 0 ) * � 0 � � 0 / * � . ^ + 0 * � , ) �+ � . � . � ] 0 * + + � 0 , ] 0 � ] 0 � . ^ / . S S * ) * - 0 � . - . ^ . � S . ] ] . � , ^ S 0 + * ] , ^ 0 � . � ] 0 ) * ) � * S ^ ,� . - . ^ . ) � ] ] , , / . ) * - 0 . � + ] � - . ^ . 0 ) � � , ] + � . / * - * ] , ] � + . , + + . + , ) S . - . ] � * ] . � . ^ � , ^ . � � . � S * ] * � � . ^ � , S * ^ . - . � . � � , ^ . � ) , S . + ) 0 + , � , ^ S 0 + * ] , ^ . � * � � . ^ � , ^ . 0 ]+ 0 . ] * 0 ) � ) � � ) S * - * � . ) * ) + 0 � 0 , ) * � S . ] ] . . � * 0 � � , ^ - , ^ . � ) , � S . ] ] , � � * S * � ^ , �� , ^ . � � . � S . - � . � � 0 � S . � . � * 0 � * S S ^ , ^ ] . � ) � � . � S * / * - * . + * / . � . ] , � ^ 0 / ,0 / / , � 0 ) . � . ^ � 0 � � . - , ] S ^ * , ] ] , � . + * ) - , . + * � � , S � S S . ] . � � + + . � � 0 � . � � * S * �

- 0 , ] S ^ . � S . ] ] . � � . � S * � ^ * + . - 0 / . ) S * � � . ^ * � � � ) � 0 * ) , � * S S * � * ^ S 0 0 � * S . � 0 � ] ,] � / 0 ) * � 0 S , - . ] + 0 . ] * . , � � � ) S , + * � S , ) S . ) . ] S . / � * . ) . ] ] * � � , � 0 * . - . � . ^ + 0 *� * � � 0 � 0 ] . ^ 0 ] . � , ^ ] , . � � * S * � ^ , � , ^ ] , � 0 ) � ) � � ) S * - . ] + 0 . ] * � � * / � ^ * - 0 � S . ] ] . .^ 0 S ^ * � , ^ ] , 0 - . ) S 0 + , ) . ] ] , � � * S * � � , S S , , ] ] . � S . ] ] . � � ^ S ^ * � � * � + * / . � . - ^ . / *) . 0 + , � 0 S * ] 0 � � + + . � � 0 � 0 � � � . � S . 0 � * S . � 0 ) * ) � * ) * ^ . , ] 0 � S 0 + � . . � 0 � * � ) . ^ , � . ^ + 0 *^ , % ) , ^ . � � . � S , S . + ) 0 + , - 0 * � � . ^ � , � 0 * ) .

! . ] ) * � S ^ * + , � * 0 ] S 0 � * - 0 ] � + . ) * ) . ) . ] ] * � � . S S ^ * � 0 � 0 � 0 ] . � ] 0 ) � ^ , ^ * � � * .0 ) � , S S 0 * ] S ^ . ] , � ^ . � � . ) � , + � . ] * + + � 0 * � / , ) * ^ 0 . � + . , + * � ] 0 . ^ . � - , 5 � � � ,5 � � � � � � / , ^ . � S , 0 ] � , S S * + � . 0 ] + 0 . ] * . / * ] S * � ] � / 0 ) * � * � � 0 � S * , S , ] . � ^ . �� � . ) � , . � � 0 ) - 0 - 0 � S � ^ � , ] * � � . ^ � , � 0 * ) . - 0 * � � . S S 0 + � . . / . S S * ) * . ) . ^ � 0 , ) . ] ] ,] � ) � � . � � , - * ) - , - . ] ] 0 ) � ^ , ^ * � � *

! . ] W V m d Z [ [ � � , ^ , ) ) * 0 ) S ^ * - * S S 0 0 + * ) + . S S 0 � , � . � S 0 ] 0 � � , S 0 0 ) S � S S * 0 ]] , � * ^ * � � + + . � � 0 � * � . - ^ . / * + * � . ] 0 ) � ^ , ^ * � � * S . ^ / 0 + * . + * � , � 0 0 ) S . ) - . � . ^ � � � � � � � � . � � � � � � + , � 0 ^ . / * 0 ] / * S 0 � * � . ^ + � 0 . 0 / � * ^ S , ) S . * � � . ^ � , ^ . + * ^ � 0+ . ] . � S 0 , � , � � . � ^ . � � . ) � . . � � , ] 0 S . + ) 0 + � . � * ) * ) . + . � � , ^ 0 . � . ^ * S S . ) . ^ . ^ 0 � � ] �S , S 0 , � � ^ . � � , � 0 ] 0 � S . + ) 0 + , - 0 � � � � � � � � � � � � � � � � � � � � . � + ^ 0 � . ^ . / * � 0 ) ) . �S , ] 0 ^ 0 � � ] S , S 0 . 0 � ^ 0 ) + 0 � , ] 0 � ^ * � ] . / 0 , � ^ * ) S , S 0

! . ] W V m d Z [ [ � � . ^ ^ , . � � * � S * ] , ] � * ^ 0 S / * + � . + 0 � . ^ / . S S . - 0 ^ 0 + * � S ^ � 0 ^ .

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] . 0 / / , � 0 ) 0 � � � � � � � � � � � � � � � � � ) . � . ^ ^ , � S � - 0 , S , ] , � S ^ � S S � ^ , . ] . � ^ * � ^ 0 . S ,

! . ] W V m d Z [ [ � � . - ^ . / * 0 ) - . S S , � ] 0 * 0 ] ] , � * ^ * � � * ] S * � * � * � ) , - . �� + ^ 0 � 0 * ) . - . 0 - , S 0 - 0 0 ) � � S 0 ) S ^ * - � ^ ^ . / * ] . / . S * - * ] * � 0 . � � , S . � . ^ + * / � * ^ ^ .� ) , / , � � , , S S . ) - 0 � 0 ] . - . ] ] , ) . � � ] * � , - 0 � ^ 0 * ) . , 1 5 � � . 0 ] � * � S � , ^ . & � $ ( �� R , - * � . ^ , S * � ) * ] S ^ . � . - ^ . / * ] , S . + ) 0 + , - 0 ^ 0 + * � S ^ � � 0 * ) . , � � ] 0 + , S , , ] ) * � S ^ *+ , � * � , � ] S 0 / * , ) , ] 0 � � . ^ . / * 0 + ^ 0 S . ^ 0 - 0 + * / � * � 0 � 0 * ) . - . 0 ^ 0 � � ] S , S 0 � , ^ � 0 , ] 0 ) � � 0 * S S . ) � S 0

! . ] W V m d Z [ [ � + , � 0 ^ . / * ] 0 / � * ^ S , ) � , - . ] ] , � * ^ * � � * ] S * � � . - ^ . / * 0 + * ) �� ^ * ) S 0 S ^ , 0 ^ 0 � � ] S , S 0 � ^ . + . - . ) S 0 . � � . ] ] 0 - , ) * 0 * S S . ) � S 0 . / . S S . ^ . / * 0 ) . � 0 - . ) � ,] . � ^ 0 ) + 0 � , ] 0 - 0 � . ^ . ) � . " � � * ^ ^ . / * � * 0 , ] + � ) . 0 / � * ^ S , ) S 0 + * ) � 0 - . ^ , � 0 * ) 0 � � ] ] ./ . S * - * ] * � 0 . � � , S . . ] . S . + ) 0 + � . , - * S S , S . � � ) , � * ^ S , - 0 ^ 0 . � 0 ] * � * - 0 S � S S , ] ,S . � 0 , ^ ^ 0 + + � 0 S * + * ) � ) , � , ) * ^ , / 0 + , - . ] + * ) S . � S * 0 ) + � 0 S , ] . ] , � * ^ * � 0 0 ) � . ^ 0 � + .

! . ] W V m d Z [ [ � � . - ^ . / * � � , ] 0 � * ) * ] . � ^ * � � . S S 0 � . � . ^ 0 ] � � S � ^ * � - . � + ^ 0 � . ^ �. / * ] . � ^ 0 ) + 0 � , ] 0 ) * � 0 S , ) . ] + , / � * - . ] ] � � � � � � � � � � � � � � � ) ) . � , ^ . / * + . ) ) *- . � ] 0 � ] S 0 / 0 � � 0 ] � � � 0 - . ] ] . S . + ) * ] * � 0 . � � , S . � . ^ * � � . ^ � , � 0 * ) 0 , ] ] 0 ) � ^ , ^ * � � * - ,S . ^ ^ , . - , ] ] * � � , � 0 * . � 0 - . ) � 0 , ) - * + * / . 0 ] ] , � * ^ * � � * ] S * � 0 , 0 ) � 0 ) S * ) 0 , + * ) ] .^ 0 + . ^ + � . � * ^ S , S . , � , ) S 0 - , � ^ � � � 0 . � ^ * � . 0 . � S , S � ) 0 S . ) � 0

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� , � * ] , ^ . � 0 * ) . - . ] ] * � � . S S ^ * . ] . S S ^ * / , � ) . S 0 + * , + � 0 0 ) * � S ^ 0 * + + � 0 � 0 , ) * � . ) � 0 �� 0 ] 0 . 0 ] ^ , ) � . � � 0 � 0 � 0 ] . � 0 - . ) S 0 + , S * ) . ] - 0 , � ^ , / / , - , 0 + * ] * ^ 0 - . ] ] , ^ + * � , ] . ) *

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� 0 � � ^ , 1 1 � � � � � � � � � � � � � � � � � � � � � � � � ! ! " # $ ! ! " # % & ' ( ! ) * # +

� ] + * � 0 - - . S S * � � � � � � � � � � � � � � � � � � � � � � . + * / � * � S * - , 0 � , ^ 0 S 0 � 0 - 0 ^ , - 0 �, � 0 * ) 0 . ] . S S ^ * / , � ) . S 0 + � . . � � ^ . + 0 � , / . ) S . � - , 0 ^ , � � 0 � , / / , � 0 ^ , � � 0 , � 0 ^ , � � 0� ] S ^ , � 0 * ] . S S 0 � 0 ^ , � � 0 � 0 � 0 � 0 ] 0 � 0 ^ , � � 0 0 ) � ^ , ^ * � � 0 � ] . / 0 + ^ * * ) - . � ] . * ) - . ^ , - 0 * � , ^ S . ) - * - , 0 ^ , � � 0 � , / / , � ) * , - , ^ ^ 0 � , ^ . , ] ] . * ) - . ^ , - 0 * � ] , ] � ) � � . � � , - * ) �- , , � / . ) S , . ] , � ^ . � � . ) � , - 0 / 0 ) � 0 � + . � , - . � . / � 0 * � ] . * ) - . 0 ) � ^ , ^ * � � . � , ) ) *] � ) � � . � � , - * ) - , / , � � 0 * ^ . - . 0 ^ , � � 0 � 0 � 0 � 0 ] 0 . / 0 ) * ^ . - . ] ] . / 0 + ^ * * ) - . � * � � � ^ .� ^ . � � . ) � , � 0 � � , � � , - 0 � � . ] ] , - . 0 ^ , � � 0 � 0 � 0 � 0 ] 0 . � 0 � , ] S , - . ] ] . / 0 + ^ * * ) - . � � . ^ , - 0 , � 0 * ) 0 0 ) � ^ , ^ * � � . + * � S 0 S � 0 � + * ) * ] , + * � 0 - - . S S , ^ , - 0 , � 0 * ) . S . ^ / 0 + ,

� ] � * ] . ) * ) . 0 ] � * ] * * � � . S S * + � . � ^ * - � + . . ) . ^ � 0 , � � � , ] � ) � � . * � � . S S * ] ,+ � 0 S . / � . ^ , S � ^ , � 0 , � � � . ^ 0 * ^ . , 5 - . / . S S . ^ , . ) . ^ � 0 , � , � - , - . � ] 0 � + 0 . ) �� 0 , S 0 � � - 0 / * � S ^ , ^ . + * / . ] . / 0 � � 0 * ) . - 0 . ) . ^ � 0 , � * � � . ] . � , S , , ] ] , S . / � . ^ , S � ^ ,- . ] ] * � � . S S *

$ . � ) * � � . S S * . � * � S * 0 ) � ) + * ) S . ) 0 S * ^ . + * ) � , ^ . S 0 , S . / � . ^ , S � ^ , � ) 0 �� * ^ / . � + 0 , � � . S S 0 , / * + � . ] * � � . S S * ^ , � � 0 � ) � , ] . � � 0 ] 0 � ^ 0 * S . ^ / 0 + * + * ) ] . � , ^ . S 0+ � . ] * + 0 ^ + * ) - , ) * . + � . . / . S S , . ) . ^ � 0 , + * � � + * / . ] . � , ^ . S 0 - . ] + * ) S . ) 0 S * ^ . � , ] . * � � . S S * , � � * ^ � . . 0 ^ ^ , - 0 , ] , � S . � � , � � , ) S 0 S , - 0 . ) . ^ � 0 ,

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$ , � � 0 , / * + � . � ) , � � � . ^ + 0 . ) . ^ , , � � * ^ � . S � S S . ] . ^ , - 0 , � 0 * ) 0 0 ) + 0 - . ) S 0 � � - 0. � � , . - . � . 0 ^ ^ , - 0 , ^ ] . , ] ] * � S . � � * / * - * � . . 0 ) . � � 0 ] 0 � ^ * S . ^ / 0 + * � , ^ , - 0 , � 0 * ) .0 ) . � � 0 ] 0 � ^ 0 * S . ^ / 0 + * . - . S S , � � � � � � � � � � � � � � � � � � � � � � � + * ^ ^ 0 � � * ) - . � + 0 * . � , ] ] ,/ , � � 0 / , . ) . ^ � 0 , + � . � ) + * ^ � * � � * . / . S S . ^ .

� ) � � � � � � � � � . � ) * � � . S S * S . * ^ 0 + * � + 0 * . . / 0 � � 0 � 0 S , 1 5 � + � . . + * ) S . / � * �^ , ) . , / . ) S . � ) � . ^ � . S S * , � � * ^ � . ) S . . - . / 0 S S . ) S . ^ , - 0 , � 0 * ) 0

R * / � ) . / . ) S . � 0 - . ) 0 � + . � ) , � * ^ � . ) S . - 0 . ) . ^ � 0 , ) . ] ] 0 ) � ^ , ^ * � � * � ) � � � � �

� � � � � � , ) - * ] , � � , . / 0 � � 0 � 0 S , � 0 , � � 0 + 0 ) , , 1 5 � - 0 � * ] 0 S * � � 5 � 2 2 � . � ) � � � � �

� � � � � � � . . 0 ) � . ^ 0 * ^ . � ) S 0 � 0 + * - 0 , � ^ , / / , - . ] + * ^ � * ) . ^ * . 0 ] � . � � . ) S . �

� 0 � � ^ , 1 4 � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � * # " � # ( " # +

� ] + * ^ � * � / , ) * � , � ) , S . / � . ^ , S � ^ , - 0 + 0 ^ + , � 1 5 - . 0 ^ ^ , - 0 , � ^ 0 ) + 0 � , ] �/ . ) S . ) . ] ] 0 ) � ^ , ^ * � � * $ . � 0 � * S * � ^ , � , � � . � ) , � . ^ � * ) , + * ) � ) , / , + + � 0 ) , � * �S * � ^ , + , � . ) � 0 � 0 ] . , � � . � S . ] � ) � � . � � . - * ) - , � , � ^ . / / * � ) , � * S * � S . ^ / 0 + , �

- . ] ) * � S ^ * + * ^ � *

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� , � � * ^ � 0 / . ) S * , S / * � � . ^ 0 + * - 0 . ) . ^ � 0 , ) . ] ] 0 ) � ^ , ^ * � � * � - 0 + � 0 � , ^ ] . ^ . / *) � * � , / . ) S . 0 ) � . � � 0 S * � * ] � � * - 0 ) . � S ^ . * S S 0 + � . . ] . ) S 0 � * � � * ) * � , ^ � , ^ 0 , ^ .0 ) / * - * , ) + � . � 0 � ) 0 + , S 0 � * ] . / 0 � � ^ . . � . S S � , S . � - . S . + S * ^ , - 0 ) � ^ , ^ * � � *� * � � * ) * * � � . ^ � , ^ . * � � . S S 0 ) . ] � � 0 * + � . ) * ) � * ) * � . ^ + . � 0 � 0 ] 0 0 ) ] � + . � 0 � 0 � 0 ] . �� ^ * � ^ 0 * � . ^ � � . � S * / * S 0 � * � . ) � * ) * � S 0 ] 0 � � , S 0 ] , ^ � , / . ) S . 0 ) , � S ^ * ) * / 0 , � * 0 + � �.^ 0 . � + * ) * , - 0 ) - 0 � 0 - � , ^ . + * ^ � 0 � S . ] ] , ^ 0 � , � � , ^ . ) S . / . ) S . 0 ) � 0 � 0 � 0 ] 0

� � � � � � � � � � # � " � � � � � � � � � � � � � � � � � � � � � � # � � � � � � � �

� � , ) - * � 0 * � � . ^ � , ) * + * ^ � 0 � S . ] ] , ^ 0 � 0 � * � ) , S . ) . ^ . + * ) S * - 0 , ] + � ) 0 � , S S * ^ 0 - 0- 0 � S � ^ � * � � 0 � ^ 0 ] . � , ) S 0 � * ) * 0 ] + * � 0 - - . S S * � � � � � � � � . ] � � � � � � � � � � � � � � � � � � �

� , S / * � � . ^ , S . ^ ^ . � S ^ . , � � * ^ � . ] , / , � � 0 * ^ � , ^ S . - . ] ] . ^ , - 0 , � 0 * ) 0 0 ) � ^ , ^ * � � .� ^ * � . ) 0 . ) S 0 - , ] ] . � * ^ � . ) S 0 + * � / 0 + � . . - 0 ) * ] S ^ . . / . S S . ^ , - 0 , � 0 * ) 0 � ^ * � ^ 0 . + � .� 0 � * � ^ , � � * ) � * ) * , � � . ] ] . � S . ] ] , ^ 0 � 0 ] � ^ 0 / * - 0 � � . � S 0 . � . S S 0 . � � . ] ] * + � 0 , / , S *� � � � � � � � � � � � � � � � � � / . ) S ^ . 0 ] � . + * ) - * . 0 ] � � � � � � � � ( ] ] , � � * ^ � 0 / . ) S *, S / * � � . ^ 0 + * ) * ) + . ^ 0 / . - 0 * � - . S . + S * ^ , - 0 ) � ^ , ^ * � � * / * ) S , S 0 � � S . ] . � + * � 0S . ^ ^ . � S ^ 0 ^ 0 . � + * ) * , ^ 0 ] . � , ^ . � * ] * ] . ] � ) � � . � � . - * ) - , + � . , S S ^ , � . ^ � , ) * ] , S �/ * � � . ^ , � . � . ^ � � . � S * / * S 0 � * + � . � ] 0 * � � . ^ � , S * ^ 0 � * ) * � * � 0 � 0 * ) , S 0 � � , ] S ./ * ) S , � ) . � - * � . ] , ^ 0 , ^ 0 � � ] S , � . + + , . � ^ 0 � , - 0 � , � * ^ . , + � � . * + � . , � � * ^ � 0 ^ . � � .0 ^ , � � 0 0 ) � ^ , ^ * � � 0 � � . � S * - 0 � S � ^ � * � � � 0 ) - 0 � ^ 0 - � + . ] , ) . � S ^ , - 0 � � . S S ^ 0 � 0 � 0 � 0 ] 0- , S . ] . � + * � 0 S . ^ ^ . � S ^ 0

� ] � . � ) , ] . - 0 � * ) - * � � � � � � � � � � � 0 ) � . + . � � 0 � � * ^ 0 - � ^ ^ . � . � / . - 0 , ) S . / . S * �- 0 . / � 0 ^ 0 + 0 � � . ) . � � * � , ] � S , ^ . ] . ) S 0 S , 0 ) / * - * - , � * S S ^ , ^ ] * 0 ) S � S S 0 0 � 0 � . ]- . ] ] 0 / / , � 0 ) . � , � S . ] ] , , � � , ^ . � � 0 ) - 0 0 / / . ^ � , 0 ) � ) � * ) - * - 0 ^ , - 0 , � 0 * ) 0 0 ) � ^ , ^ * � � . + � . � � *, ) + � . . � � . ^ . + * ) � 0 - . ^ . � * ] . � . ^ * S S . ) . ^ . * � � . ^ � , � 0 * ) 0 / 0 � ] 0 * ^ 0 � . ) . + . � � , ^ 0 *

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^ 0 - � ^ ^ . 0 ] � 0 � � * � � 0 � 0 ] . ] . � . S S * - . ] ] , S / * � � . ^ , � , - . � . / � 0 * / * ] S 0 - . S . + S * ^ , -0 ) � ^ , ^ * � � * � * ) * � S , S 0 � * � S 0 � � � , ] ] * ) 0 � ^ , � � 0 . - , . ^ * � ] , ) 0 � , ] 0 / . S * - 0 ^ 0 � � ] �S , ) * . % + , + 0 � / , + * ) . � � 0 . � * � � 0 � 0 ] . . � . S S � , ^ . � * ] * * � � . ^ � , � 0 * ) 0 - 0 � 0 + + * ] .� * ^ � 0 * ) 0 - 0 + 0 . ] * . � . ^ � ^ . � 0 � . ^ 0 * - 0 - 0 S . / � *

" � 0 � S . , ) + � . � ) , ] S ^ , + * / � * ) . ) S . - 0 - 0 � S � ^ � * - . ] ] * � � . ^ � , � 0 * ) . , � S ^ * ) * / �0 + , � 0 ] � � � � � \ 0 � � ] S , 0 / � * ^ S , ) S . � * � � . - . ^ . � ) � . � ) , ] . 0 ) S . ) � * � . ^ ^ 0 + , � , ^ ) .] , / , � � 0 * ^ � � , ) S 0 S , - 0 0 ) � * ^ / , � 0 * ) . / , � � . . � � * . 0 / / . ^ � * 0 ) � ) . ) * ^ / .� � , ) S 0 S , - 0 ^ � / * ^ . � ^ 0 � � ] S , - . ] S � S S * 0 ) � S 0 ] 0 � � , � 0 ] . � . � , S S , / . ) S . + * / . ^ 0 � � ] S ,0 / � * � � 0 � 0 ] . + , � 0 ^ . + * � , - 0 + . � ) , � . ^ � * ) , + � . � ^ ] , 0 ) / . � � * , ] - 0 � S � ^ � * - 0 � ) ,� * ] ] , ^ � / * ^ * � , � . ^ - . ) 0 ^ . � � , ) S * � ) 0 / / , � 0 ) . � 0 , ^ � / * ^ * � , � � 0 0 ) S ^ * - � + . 0 ] � � � � � � � � �

� � � � � � � � � � � � � � � , � � ^ . � 0 , S * $ 3 ! � - , ] ] 0 ) � ] . � . � � � � � � � � � � � � � � � � � � � � � + � . . � �� ^ 0 / . 0 ] ^ , � � * ^ S * S ^ , 0 ] � . � ) , ] . � S 0 ] . . - 0 ] ^ � / * ^ . � � � . � S � ] S 0 / * � 0 . ) . � , ] � S , S *+ * / . ] , ^ , - 0 + . � � , - ^ , S , - . ] ] , � , ^ 0 , ) � , � 0 ) - 0 + , S , + * ) � �

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- * � . � . ] 0 ) S . ) � 0 S , - . ] 0 � . � 0 / * � 0 � . ] . - � . 0 ] � , ] * ^ / . - 0 * - . ] ] 0 ) S . ) � 0 S ,- 0 S � S S 0 0 � 0 � . ] � + , ] + * ] , S * ) . ] / * - * � . � � . ) S . �

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� � � � � � � � � � � � � � � � � � . � � * . - * � � S * � ^ * � ^ 0 * , ] ] , ) , S � ^ , + * ^ � � � + * ] , ^ .- . ] ] , ^ , - 0 , � 0 * ) . � , � S . ] ] , . / . S S . � ) + . ^ S * ) � / . ^ * - 0 � * S * ) 0 ) . ] ] � ) 0 S , - 0 S . / � * � / , 0 ]� � * � , ] * ^ . + , / � 0 , - , � ) 0 ) S . ^ � , ] ] * - 0 S . / � * , ] ] , ] S ^ * � 0 ) � , � . , - � ), ) - , / . ) S * � S , S 0 � S 0 + * � - . � + ^ 0 S S * - , ] ] , - 0 � S ^ 0 � � � 0 * ) . - 0 � � � � � � � � , � ^ * �� ^ 0 . S , � * ) - , / . ) S , ] . - . 0 � ^ * + . � � 0 � * 0 � � * ) 0 , ) 0 . � � . ] ] , - 0 , � . ^ . 0 ] � , ] * ^ .- . ] ] , � � � � � � � � � � � � , ] . , � � . ] ] * - . ] ] , � � � � � � � 0 ) - 0 � � . � 0 + * ) � 0 - �. ^ , � * ] * 0 ] ^ � / * ^ . + * ^ � � � + * ] , ^ . - . ] ] , ] � + . . - 0 ] � . � ) , ] . � , � , ] * ^ . � � 0 ]� 0 � / , - . ] � � � � � � , ] . � . / � ^ . ] , ^ , - 0 + . � � , - ^ , S , - 0 & � * S S . ^ ^ . / * - � ) � � .+ � . � � . � . / � ^ . � � � � . � S * � , S S * � , � ) 0 / � * ^ S , ) � , + ^ � + 0 , ] . � � 0 + + * / . 0 ] � . � ) , ] . + ^ . � + . � ^ * �� * ^ � 0 * ) , ] / . ) S . , ] S . / � * - 0 . � � * � 0 � 0 * ) . � � � � + ^ . � + . � ^ * � * ^ � 0 * ) , ] �/ . ) S . , ] ] , � � � � . ^ � * S . ^ ^ , - - * � � 0 , ^ . � � . � . / � ^ . ) . + . � � , ^ 0 * � S ^ , � + � �^ , ) - * * � ) 0 , ] S ^ , � * ) S . - 0 ^ � / * ^ . � � � , - ^ � � ] 0 + , ^ . ] , - � ^ , S , - . ] ] , � * � , � � . � S , . ] , � � 0 . � , � 0 * ) . - . ] � . ^ + � �. ] . . � � * � 0 � 0 * ) 0 � ^ . � 0 � , ) ) * � ) , + , S �S 0 � , � � , ] 0 S , � 0 ) � , S S 0 � 0 � 0 ] S . / � * � 0 , + + * ^ + 0 , � � 0 � 0 ] ^ � / * ^ . � ^ . � , ] . � � ]� . � ) , ] .

� � � � � � � � � � � � � � * � � � � � � � � � � 0 � ^ . � . ) S , + * / . � ) � . � ) , ] . + � . � 00 ) + * ) S ^ , � � , ) - * ) * ) + . ] � + . + � . + , - . � � ] � . ) � * ^ . � � . � 0 + * ) * � + . � � .0 ] ) � / . ^ * - 0 . ] . S S ^ * ) 0 S . ^ / 0 + 0 � ^ . � . ) S . 0 ) * � ) 0 � 0 � . ] 0 ) � ) � . + * ) - * � � 0� * S ^ . � � . � * S S ^ , ^ ^ . , - * � ) 0 � 0 � . ] S , ] . ) � / . ^ * / * ] S 0 � ] 0 + , S * � . ^ 0 ] S . / � *- 0 . � � * � 0 � 0 * ) . � . ] 0 / 0 ) , ) - * + * / � ] . S , / . ) S . ] , + * ^ ^ . ) S . - 0 � � 0 * � ) � . + . ] ,� . ) . ^ , � 0 * ) . S . ^ / 0 + , ^ 0 � � ] S , . � � . ^ . � ) � ^ * + . � � * � S * + , � S 0 + * � - 0 � * 0 � � * ) � �+ * ) ] . + , ^ , S S . ^ 0 � S 0 + � . - . � + ^ 0 S S . � ^ 0 / , � ) � . ) . ^ . � � � . � S * S 0 � * - 0 � � � � �

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� � * . � � . ^ . ^ 0 - * S S * - 0 / 0 ) � . ) - * ] , S . / � . ^ , S � ^ , S ^ , / 0 S . ^ , � ^ . - - , / . ) S *- . ] � . ) � * ^ .

� � � � � � � � � � � � � � * � � � � � � � � � � � � � � . 0 ] ^ � / * ^ . 0 ) S ^ * - * S S * - , � ] 0 � S ^ � �/ . ) S 0 . ] . S S ^ * ) 0 + 0 � , - . � . / � 0 * � ] 0 , / � ] 0 + , S * ^ 0 � " � � * ) * ) � , � S , S 0 � S 0 �+ , � * 0 � � * ) 0 , ) , + * / . 0 � ^ . + . - . ) S 0 � / , � , � ) , ) - , / . ) S * � , � � � 0 , ) * � )� . ) . ^ , ] . ^ 0 � � ] S , - 0 � . ) - . ) S . - , � ] 0 � S ^ � / . ) S 0 � S 0 ] 0 � � , S 0 � � � 0 ) - 0 S , ] . � , ] * ^ .� 0 . ) . � * ^ ) 0 S * - 0 ^ . S S , / . ) S . - , ] + * � S ^ � S S * ^ .

\ 0 � � ] S , / * ] S * 0 / � * ^ S , ) S . * S S . ) . ^ . � ) , � � * ) , � S 0 / , - . ] � � � � � � . ^ ^ 0 � � + 0 ^ ., - . � . S S � , ^ . � ) , � , ] 0 - , ^ 0 + * � S ^ � � 0 * ) . - . ] ] 0 / / , � 0 ) . * ^ 0 � 0 ) , ] . � . � . / � 0 * - 0� . � � 0 S * ^ 0 � * ^ S , S * � � * . � � . ^ . � S 0 ] . � . ^ + , � 0 ^ . / . � ] 0 * 0 ] + * ] ] . � , / . ) S * S ^ , 0 - 0 �� . ^ � 0 S 0 � 0 - 0 ^ � / * ^ . � ) � ) , ^ 0 � ^ . � , 0 ) + � 0 + * ) S , � ^ . � , ] . ) S . / . ) S . 0 ] � � � � � � � � � � � � � � � . � 0 . ) . ^ , - �- * � � 0 , S * 0 ] S . / � * - 0 � * � , � ^ , - - * � � 0 . ^ , , ) + � . 0 ] � . � ) , ] . � / , 0 ] ^ � / * ^ . ) * )+ , / � 0 , � ] , ] . S S � ^ , , � � 0 . ) . � + * / � ) � � . � � ) , � * ] , � * ] S , � � � � 0 ) - 0 0 ] � � + ^ . � + .] 0 ) . , ^ / . ) S . + * ) 0 ] S . / � * - 0 . � � * � 0 � 0 * ) . � 0 + . � . ^ � , � � . � ^ . � , ] . 0 ] � � � � � � � � �. � � * + ^ . � + . + * / . ] , ^ , - 0 + . - . ] S . / � * - 0 � * � , � � � 0 ) - 0 � � + ^ . � + . � ^ * � * ^ � 0 * ) , ] �/ . ) S . , � � . ) * ) , � � � S S * + 0 * ^ 0 � � ] S , � . ^ * � * ] * � . 0 ] � . � ) , ] . . / * ] S * - . � * ] . . - � ) � � . , ) + � . 0 ]^ � / * ^ . + * ^ � � � + * ] , ^ . . S , ] / . ) S . � 0 + + * ] * - , � * S . ^ . � � . ^ . S ^ , � + � ^ , S * ( ] + * ) �S ^ , ^ 0 * � � . ^ � . � ) , ] 0 / * ] S * 0 ) S . ) � 0 � , - * / 0 ) , ^ . . � ^ * � ^ 0 * � � . � S � ] S 0 / * . - 0 ] � � � , ^ , � . / � ^ . � ^ * � * ^ � 0 * ) , ] . , � �

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� . * � � . ^ � , � 0 * ) 0 , � S ^ * ) * / 0 + � . , ] � ) � � . � � . - * ) - , ) . ] ] 0 ) � ^ , ^ * � � * . � . S S � , S . - ,S . ] . � + * � 0 S . ^ ^ . � S ^ 0 � * � � * ) * . � � . ^ . � , S S . � * ] * , S S ^ , � . ^ � * � ) ) � / . ^ * ] 0 / 0 S , S * - 0

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) . � S ^ . , S / * � � . ^ 0 + � . � ) . � S ^ . 0 ) ] � ) � � . � � , - * ) - , � ] . � , ) - . - * � . ] , � � * ^ � 0 �/ . ) S * . � 0 + + * ] * � � � � * / , � � � � ) + , ) 1 2 2 � � � ] � ^ * � ] . / , � ^ 0 ) + 0 � , ] . - , , � ^ * ) S , ^ . . ] . � S ^ , � 0 * ) . - . ] � . � ) , ] . , � S ^ * ) * / 0 + *- . � * ] . - , ] � � � � * - . ] � � � � � � � � , / � 0 * . � . ] * + . / . ) S . � , ^ 0 , � 0 ] . � ) � , S S 0 ] , S �/ * � � . ^ , , � � * ^ � . . ^ 0 � 0 ^ ^ , - 0 , � ) , � ^ , � 0 * ) . - 0 . ) . ^ � 0 , � ^ * � . ) 0 . ) S . - , ] ] * � � , � 0 *. � � . + 0 , ] / . ) S . - , ] ] , S . ^ ^ , � ) � ^ 0 / , , � � ^ * � � 0 / , � 0 * ) . � ] , S / * � � . ^ , � � * . � � . ^ .� 0 � S , + * / . � ) � � � � � � � � � � � 0 ^ ^ , - 0 , ) S . � � . - 0 � 1 1 � + * � � + � . 0 ] � � � � * - 0 � * S * ) 0. / . � � * . . ) * ^ / . � . + * ) � ^ * ) S , S * + * ) 0 ] ) , S � ^ , ] . � � � � � � � � + * � / 0 + * � ) * ] S ^ . 0 ]S . ] . � + * � 0 * � S . � � * , � � 0 � ) � . � ) 0 / � * ^ S , ) S . + * ) S ^ 0 � � S * , ] � � � � * - . ] � � � � � � � �

) * ) . � � . ) - * / , 0 + * / � ] . S , / . ) S . � ^ . - - * ! . ] ] * � � , � 0 * + 0 � * ) * / * ] S 0 * � � . S S 0 + � . ) * ) � * � � * ) * . � � . ^ . � 0 � S 0 - , S . ] . � + * � 0

* S S 0 + 0 0 ) � � , ) S * S ^ * � � * � ^ . - - 0 � . ^ . / . S S . ^ . . ) . ^ � 0 , + * ) ] � ) � � . � � , - * ) - ,) . ] ] * � � � � � � � � � � � � � � ) * ] S ^ . / * ] S . � * ^ � . ) S 0 ] � / 0 ) * � . � . ) � * ) * , S S . ) � , S . 0 )� � , ) S * 0 / / . ^ � . 0 ) ) � � 0 - 0 � * ] � . ^ 0 � S . ] ] , ^ 0 . � , � � ^ , � � 0 0 ) � ^ , ^ * � � 0 � , � . ) - *] � ) � � . � � , - * ) - , / , � � 0 * ^ . - . ] ] , � � � � � � � � � � � ^ 0 . � + * ) * , - , S S ^ , � . ^ � , ^ . S , ] 0) � � 0 + * � / 0 + � . . , - , ^ ^ 0 � , ^ . , ] � � * ] * R 0 * � 0 � ) 0 + , + � . � 0 � * � � * ) * * � � . ^ � , ^ . ) . ] ] 0 ) � ^ , ^ * � � * * � � . S S 0 , � � , ^ . ) S . / . ) S .) * ) ^ 0 ] . � , � 0 ] 0 0 ) � � � � � � � � � � � + * / . , - . � . / � 0 * ] . � S . ] ] . 0 ) � , � . - 0 � * ^ / , � 0 * ) .

� . � S . ] ] . � . ) � * ) * � * ^ / , S . - , ] + * ] ] , � � * - 0 ) � � * ] . . � * ] � . ^ 0 � � � , ) - * ] . ) � �� * ] . + * ] ] , � � , ) * ] , ] * ^ * - . ) � 0 S , . S . / � . ^ , S � ^ , , � / . ) S , ) * � 0 ) � , ^ S 0 + * ] , ^ / * - *, ] + . ) S ^ * - . ] + * ^ � * � ) . ] � � , ] . � 0 � * ^ / , � ) * � � . S S * + � 0 , / , S * �� � � � � � � � � � � � � 0 ) + � �. � � . � S * * � � . S S * ^ 0 / , ) . , ] ] 0 ) S . ^ ) * - . ] ] , ) � � * ] , � ^ 0 � � ] S , - 0 % + 0 ] . , � � 0 � �S , ^ ] * � � * 0 + � �. ] , ] � + . . / . � � , � 0 . ) . , � � * ^ � 0 S , - , ] ] , / , S . ^ 0 , � ^ . � . ) S . 0 ) S * ^ ) * , -. � � * $ * ] * 0 ) � ) * � S , - 0 * � � + + . � � 0 � * ] , S . / � . ^ , S � ^ , , � / . ) S , 0 ) / * - * S , ] . - ,, ] ] * ) S , ) , ^ . 0 ] / , S . ^ 0 , ] . . � S . ^ ) * . ] , � ^ * S * � S . ] ] , � � * . � � . ^ . * � � . ^ � , S , 0 ) � � � �

� � � � � � � ) * , � � . � S * 0 � S , ) S . . � � , � � * . � � . ^ . � S � - 0 , S , � * ] * + * ) S . + ) 0 + � . - 0* � � . ^ � , � 0 * ) . , - 0 ) � ^ , ^ * � � * � ^ , / 0 S . � � . � S , S . + ) 0 + , . � S , S * � + * � . ^ S * � ) � ^ , )

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� . ^ � * S . ^ * � � . ^ � , ^ . � ) , � * ^ � . ) S . , 1 5 � � . ) . + . � � , ^ 0 * � S 0 ] 0 � � , ^ . � � . + 0 , ] 0 S . + �) 0 + � . - 0 * � � . ^ � , � 0 * ) . , + , � � , - . ] � . � ) , ] . - 0 � * ) - * 0 ) S ^ * - * S S * - , ] ] , S / * � � . ^ ,. - , S � S S . ] . � * ) S 0 - 0 . ) . ^ � 0 , S . ^ / 0 + , � + * / . � ] 0 � S ^ � / . ) S 0 � S . � � 0 � S 0 ] 0 � � , S 0 � . ^] , + � � 0 � 0 � 0 * ) . - . 0 - , S 0 + � . � � . ) + � �. ^ , � ^ . - - , S 0 + * ) S . + ) 0 + � . , + + � ^ , S . � ^ 0 / , ) �� * ) * + * / � ) � � . - . ] ] . � * ^ � . ) S 0 - 0 + , ] * ^ . � � 0 - . , . � � . ] ] , - 0 , + � � 0 � 0 ^ . - , S 0 � � ]� . � ) , ] . - 0 � * ) - * + � . � 0 � * / / , , ] � . � ) , ] . � ^ * � . ) 0 . ) S . - , ] ] * � � , � 0 * . � * 0 � � , ^ .S , ] 0 0 ) � * ^ / , � 0 * ) 0 � . ^ * S S . ) . ^ . 0 ] � . + * ) - * / . - 0 , ) S . � * S S ^ , � 0 * ) . � ) � 0 � S . / , . % + , + . � , ^ . � � . � � . ] ] * - 0 � � ) S , ^ . 0 ] S . ] . � + * � 0 * � � ] ] , � * ^ � . ) S . - 00 ) S . ^ . � � . . � � + + . � � 0 � , / . ) S . � � ] + 0 . ] * � 0 ) / * - * - , � S 0 / , ^ . 0 ] � . � ) , ] . - . ] � � �� � � � � � � . � * 0 � * S S ^ , ^ ^ . ] , � . + * ) - , , + � � 0 � 0 � 0 * ) . , ] ] , � ^ 0 / , � � . � S * � 0 � S . / , �� . ^ * � � � ) � 0 * ) , � * ] * 0 ) S . * ^ 0 , R * / . , � � 0 , / * - . S S * � , � S , � ) , � 0 + + * ] , � * ) S . - 0+ , ] * ^ . � . ^ - 0 � S � ^ � , ^ . ] , ^ . + . � 0 * ) . - . ] � . � ) , ] . � � � ^ S ^ * � � * ] . / 0 � � 0 * ) . - 0 + , ] * ^ .� , ^ 0 , ) * S . � * ] / . ) S . 0 ) � � ) � 0 * ) . - . ] S . / � * . � � 0 ) - 0 0 ] � � � � � � � � � * S S ^ , S S *� � ) S , ) - * 0 ] S . ] . � + * � 0 * , ] S ^ * � . . / * ] S * - 0 � . ^ � * - , � � . ] ] * . � . S S 0 � , / . ) S . � ^ . �� . ) S . ) . ] ] , � ^ 0 / , ) . � S ^ , - 0 + 0 . ] * * � � . ^ � , S , � . + , / � 0 , S * 0 ] S . / � * � 0 ] / * � 0 / . ) �S * - . ] S . ] . � + * � 0 * ) * ) . 0 ) � , S S 0 0 / / . - 0 , S * / , ^ 0 + � 0 . - . , ] + � ) 0 � . + * ) - 0 � ) . ] ] * ^ �- 0 ) . - . 0 � � . + * ) - 0 � � , S . + ) 0 + , � � , S , � � � 0 ) - 0 � � ^ . � . - . - 0 � * S S ^ , ^ ^ . 0 ] � � . � ) , ] .- . ] + 0 . ] * � / � * � . ) - * � 0 0 ] � 0 � � . ] * + . / . ) S . � * � � 0 � 0 ] . . � � 0 ) - 0 - 0 � * + * ^ 0 � � . S S *, ] ] , � * ^ � . ) S . � ^ 0 ] ] , ) S . � , ] . � � * � S , / . ) S * . . � . S S � , S * 0 ) - � . / * - 0 � � � * � S , ) �- * 0 ] � * ] * � � . + + � 0 * � . + * ) - , ^ 0 * - . ] S . ] . � + * � 0 * � � 0 � � 0 + + * ] * . / , ) . � � . � * ] . � .� � * � S , ) - * ] 0 ) S . ^ * S . ] . � + * � 0 * ! . ] � ^ 0 / * - 0 � � . � S 0 - � . / * � 0 / . ) S 0 ] * � � . + + � 0 *� . + * ) - , ^ 0 * � 0 . ) . � , S S * * � + 0 ] ] , ^ . ^ , � 0 - , / . ) S . S ^ , - � . � * � 0 � 0 * ) 0 � + * ^ ^ 0 � � * ) - . ) �

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S 0 ^ 0 � � . S S 0 � , / . ) S . , ] ] , � * ^ � . ) S . . , ] + 0 . ] * � . ^ * � ) 0 � * � 0 � 0 * ) . � 0 , + � � 0 � 0 � + .� ) 0 / / , � 0 ) . - 0 � ^ . � . - � ^ , S , � � � � � � � � . ^ S , ) S * - � . 0 / / , � 0 ) 0 + * ) � . + � S 0 � . + * ^ �^ 0 � � * ) - * ) * , ] ] 0 ) + 0 ^ + , , ] ] * � S . � � * � � � � � � � � � � . ] , � ^ . � � . ) � , - . ] ] . * � + 0 ] ] , � 0 * ) 0+ * ^ ^ 0 � � * ) - . , ] S . / � * � ^ * � ^ 0 * - . ] ] . � � S S � , � 0 * ) 0 , S / * � � . ^ 0 + � . � - . ] ] * ^ - 0 ) . - 0 1/ 0 ] ] 0 � . + * ) - * � � , ] . S . + ) 0 + , . - . S S , � � � � � � � � � . ^ * � ) � ) , - . ] ] . - � . � * � 0 � 0 * ) 0- . ] � . + * ) - , ^ 0 * � . ) � * ) * � * / / , S 0 0 � , ^ 0 � ^ , / . � . - 0 - � . ^ 0 � � ] S , S 0 � . ) � * ) * � * S �S ^ , S S 0 S ^ , - 0 ] * ^ * � � S S , � 0 , + 0 * ) * ) � * ^ ) 0 � + . � ) , � * S S ^ , � 0 * ) . + * / � ] . S , - . ] � � � � � � � � - , S * + � . . � 0 � S . � ) , - 0 � . ^ . ) � , - 0 � � � � � � � � S ^ , ] . - � . - 0 � . ^ � .+ * ) � � ^ , � 0 * ) 0 - . ] S . ] . � + * � 0 * � - . ) * / 0 ) , S , � � � � �

� . ^ * S S . ) . ^ . � ) , � * S S ^ , � 0 * ) . + * / � ] . S , � � 0 ^ 0 � . S . ] * � . ^ , � 0 * ) . - * � * , � . ^� � * � S , S * ] 0 ) S . ^ * S . ] . � + * � 0 * � / * � 0 / . ) S * + � 0 , / , S * � � � � � � � � 0 ) - 0 ^ . � 0 * ) . ) * ^ - �� � - � 0 ) � 0 . / . - 0 � � . � S 0 - � . � � * � S , / . ) S 0 � ^ * - � + . � ) 0 / / , � 0 ) . ) , ] . 0 ) + � 0] * � � . S S * � ^ 0 ] ] , ) S . * � � . ^ � , S * . ) , ] / . ) S . � 0 � 0 � 0 ] . � . - ^ . / * * ^ , � � . � S , S . + ) 0 + ,� 0 � 0 ) - . S S , � ] 0 * � � , ^ S . ) - * - , ] � * ] * � � � � � � � � . , � � 0 � ) � . ) - * � * 0 0 ] � � � � � � �

� 0 / / , � 0 ) . , � S ^ * ) * / 0 + , ^ 0 � � ] S , 0 / / . ^ � , 0 ) � ) � * ) - * � , ^ 0 , � 0 ] . � + * / . � 0 ,- . S S * 0 ) � ^ . + . - . ) � , � - . ) * / 0 ) , S * � � � � � � � � � + � . 0 ) - 0 + � . ^ . / * + * ) � ) . ] � . �� � 0 S * � ] � . � ) , ] . � � + � . , ^ ^ 0 � , - , ] ] , - 0 ^ . � 0 * ) . - 0 + * * ^ - 0 ) , S . � � � � � , ] S . / � *� � ) . ] � � ) S * � - . ] � 0 , ) * 0 / / , � 0 ) . � . - , S * - , �

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� ] � ^ * � ] . / , + � . + 0 � 0 � * ) . . � � . ] ] * - 0 � , ] � S , ^ . ] , - 0 � S ^ 0 � � � 0 * ) . � . � � . � S *^ 0 � � ] S , � * � � 0 � 0 ] . � * ] * � . � 0 + * ) * � + . . � . S S 0 � , / . ) S . 0 ] � � � � � � � � � � ^ , / 0 S . * � �� . ^ � , � 0 * ) . + * ) ] , � * ] , S . + ) 0 + , - 0 � � � � � � � � � 0 , ^ ^ 0 � , , - � ) , � * � � 0 � 0 ] . � * ] � � 0 * ) . �

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� � ) S , ) - * 0 ] S . ] . � + * � 0 * � . ^ � * � ) , � * ^ � 0 * ) . - 0 + 0 . ] * � . ) � , � . � ) , ] . S ^ , / 0 S .� � * � S , / . ) S * - 0 � , ^ + * � . + * ) - 0 � � � , ) S 0 S , - . ) * / 0 ) , S , � � � � � � � � � � � � � � � � � � �) . ] ] , - 0 ^ . � 0 * ) . � � � 0 * S S 0 . ) . 0 ) � , S S 0 �

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� � . - � . 0 / / , � 0 ) 0 * S S . ) � S . / � * � . ) - * ] * � � . + + � 0 * � . + * ) - , ^ 0 * � * � � * ) *. � � . ^ . , � . S S . - , � , ^ 0 , � 0 * ) 0 ^ . � 0 - � . - 0 � � � � � � � � � - * � � S . , ] ] . - 0 � . ^ . ) � .S . ^ / 0 + � . S ^ , ] . - � . + * ) � � ^ , � 0 * ) 0 - . ] S . ] . � + * � 0 * � ) , ] S ^ . � , ^ * ] . � ] ,S . + ) 0 + , - 0 � � � � � � � � . . � � 0 � , ] . ) S . , - � ) , ^ , � 0 - , S ^ , � ] , � 0 * ) . S ^ , - � .- 0 � . ^ . ) S 0 S . ] . � + * � 0 � � ( � � . ^ ] , � * ^ � . ) S . . � � � � . ^ 0 ] + 0 . ] * � . ) * S . ^ . / * + * ) � � � � ] , - 0 � . ^ . ) � , ^ . � 0 - � , S ^ , 0 + * ^ ^ 0 � � * ) - . ) S 0 � � * ) - 0

� � . ^ ^ , � 0 * ) 0 * S S 0 + � . . / . + + , ) 0 + � . ] , / � 0 . � � , - 0 + � * � � 0 ) � . � * ] 0 S , / . ) S .0 ) � . ^ 0 * ^ . , � 5 , ^ + * � . + * ) - 0 � + 0 * . ) * ) . � * � � 0 � 0 ] . * � � . ^ � , ^ . � ) , � * ^ � 0 * ) .- 0 + 0 . ] * S ^ * � � * ] * ) S , ) * - , ] ] , � * ^ � . ) S . - 0 ] � + . $ . 0 ] S . ] . � + * � 0 * . / * ] S *� . ) � 0 � 0 ] . � * ] , � * ^ � . ) S . � , - 0 / . ) � 0 * ) 0 . ] . � , S . � ) . ] � � * 0 ) S * ^ ) * � 0 ^ 0 ] . � . ^ ,� ) , � . ^ + . ) S � , ] . - 0 ] � / 0 ) * � 0 S , / * ] S * , ] S , � * � � . ^ * ^ 0 � � ] S . ^ , �� � � � � � �� 5

� ) � , � . , � � . � S . + * ) � 0 - . ^ , � 0 * ) 0 ] , - 0 � . ^ . ) � , � � � �� � + � . + � 0 , / . ^ . / *� � � � � , ^ , - 0 � . ) - . ) S . - , ] S . ^ / 0 ) . � � � � � � . ^ . ] 0 / 0 ) , ^ . S , ] . � , S S * ^ . � 0 . ) .� S 0 ] 0 � � , S , ] , S . + ) 0 + , + � 0 , / , S , � � � � � � � � 0 ] S . ] . � + * � 0 * � 0 . ) . � � ) S , S * � . ^ � * � ) ,^ . � 0 * ) . - 0 � . ^ . ) S . - . ] + 0 . ] * � 0 ) / * - * S , ] . + � . ] , � * ^ � . ) S . � 0 , * � � . ^ � , S , + * ) 0 ]

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� � � � � � � � � � � � � � � 0 ) ) * S , � 0 * ) . � � � � � � � � , ] . 0 / / , � 0 ) . . 0 ) - 0 � . ) - . ) S . - , ]� * ) - * , S / * � � . ^ 0 + * . - , ] / * - . ] ] * S . ^ / 0 + * - . ] S . ] . � + * � 0 * $ . ] , - 0 � S ^ 0 � � � 0 * ) .- 0 ] � / 0 ) * � 0 S , - . ] ] , � * ^ � . ) S . . + * / � , S S , � + 0 * . � � � � � � � � � � � � � � 5 �, ] ] * ^ , 0 ] � ^ * � ] . / , - . ] ] , ^ 0 + * � S ^ � � 0 * ) . - 0 � � � � � . ^ 0 � * ] S *

� ) � . ) . ^ , ] . � 0 S . ] . � + * � 0 � 0 � , ) S 0 ^ 0 + � 0 . - * ) * - 0 / . ) � 0 * ) 0 - 0 � 0 � . ] / * ] S * � 0 + + * ] .. � S 0 ] 0 � � , ) * � , � � . , / � 0 . � � . - 0 + � * � � 0 ) � � � � 0 ) - 0 � 0 - . - � + . + � . 0 ] + , � * 0 ) + � 0� � � � � � � � � � � � � � 5 ) * ) . � ) + , � * � S , ) - , ^ -

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� ] � ^ , / . * S S . ) � S * + * ) ] , S . + ) 0 + , - . ] � � � � � � � � � � � � � � � � � � + * ) S . ^ ^ , ] , � S . ] �] , + * ) ] � / 0 ) * � 0 S , - * � � 0 , . ] . � � . + * ) S ^ * � , ^ S 0 ) . � , S 0 � . � � . 0 ] / , � � 0 / * - . ] ] ,� S . ] ] , . 0 ) + * * ^ - 0 ) , S . � � � � � � 0 / , � � 0 / 0 ) . � , S 0 � 0 - . ] ] . + * ) S ^ * � , ^ S 0 � , ^ , ) ) * 0 )� � � � � � � . � � � � � � � � � . ^ ^ . ) - . ^ . / . � ] 0 * + * / � ^ . ) � 0 � 0 ] . 0 ] ^ . , ] . � � ) � 0 * ) �, / . ) S * - . ] ] , S . + ) 0 + , - . ] � � � � � � � � � � � � � � � � � � * � � . ^ � 0 , / * 0 ] � ^ * + . - 0 / . ) S *) . ] - . S S , � ] 0 *

� . 0 / / , � 0 ) 0 � . � � . ) S 0 ^ , � � ^ . � . ) S , ) * ] . � , � 0 � ^ 0 ) + 0 � , ] 0 - 0 S , ] . S . + ) 0 + , � 0 ) � � ^ , 1 � � * � � 0 , / * * � � . ^ � , ^ . 0 ] ^ 0 � � ] S , S * + * ) + ^ . S * - . 0 � 0 ) � * ] 0 � , � � 0 - . ] ] , S . + ) 0 �+ , - 0 � � � � � � � � � � � � � � � � � � + � . - . � + ^ 0 � . ^ . / * ) � * � , / . ) S . � * ) . ) - * ] , + + . ) S *� � ] ] 0 / � , S S * � 0 � 0 � * � 0 � S S * � S * + � . � � � * ^ / , ] 0 � / 0 / , S . / , S 0 + 0

� � � ) S , ) - * 0 ] S . ] . � + * � 0 * � � ] ] , � S . ] ] , - 0 0 ) S . ^ . � � . * S S . ) 0 , / * � ) 0 / / , � �0 ) . + � . + * ) S 0 . ) . 0 ] � . � ) , ] . - . ] + * ^ � * + . ] . � S . � * / / , S * , ] � . � ) , ] . - . ] � � � � � � � � 0 ) / * - * S , ] . - , ^ . ) - . ^ . 0 ^ ^ 0 + * ) * � + 0 � 0 ] . 0 ] � ^ 0 / * � � 1 � , �

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� � . ^ � * S . ^ � . - . ^ . � � , ] + * � , � 0 � * � ) , . � . � � 0 ^ . 0 ] � � � � � � � � - 0 S , ] . 0 / / , � �0 ) . + * ) � � . ] ] , * S S . ) � S , / � * � . ) - * 0 ] � * ] * � � . + + � 0 * � . + * ) - , ^ 0 * � � 1 � � � �* � � . ^ * � 0 � * S S ^ , � � * ) * ] . - � . 0 / / , � 0 ) 0 � * S S . ) . ) - * � ) 0 / / , � 0 ) . � � � � � � � � � ) . � . S S 0 0 ] � ^ * + . - 0 / . ) S * - 0 � � � � � � � � ) * ) � 0 . ) . . � . S S � , S * � � 0 / / , � �0 ) 0 , + � � 0 � 0 S . � 0 ) � * ] , ^ / . ) S . � - . S S . � � � � � � - * � * � * + � 0 / 0 + ^ * � . + * ) - 0 - 0� � * � , � � � ] ] * � 0 . S S 0 � * � + . ] S * � 5 5 4 5 5 � � . + * ) - 0 ) . ] ) * � S ^ * + , � * � � � 0 . ) .+ , ^ 0 + , S * 0 ) / . / * ^ 0 , � ) * � � � � � � � 0 ) - 0 � 0 / � * � . ] * � � . + + � 0 * � . + * ) - , ^ 0 *. � 0 ^ 0 � . S . ] * � . ^ , � 0 * ) . - 0 ] . S S � ^ , - . ] � . � ) , ] . , + � � 0 � . ) - * � ) � . + * ) - *� � � � \ 0 � . S . ) - * S , ] . * � . ^ , � 0 * ) . � . ^ � ) + . ^ S * ) � / . ^ * - 0 � * ] S . � � , S *- , ] ] * � � . ^ � , S * ^ . � 1 5 5 5 � . ^ ] , / , � � 0 * ^ � , ^ S . - . ] ] . ) * � S ^ . 0 / / , � 0 ) 0 � 0 )� , � . , - 0 � . ^ � 0 � , ^ , / . S ^ 0 � + * ) - 0 � 0 * ) 0 , S / * � � . ^ 0 + � . � � 0 � 0 � 0 ] 0 S , � � S , S * - . ]^ 0 � . ] , S * ^ . � + , ^ , S S . ^ 0 � S 0 + � . - . ] S , ^ � . S � . S + � $ � + + . � � 0 � , / . ) S . � . ) � * ) * � , ] � , S 0 - � . � * ] 0 � ^ , / . + * ) S . ) . ) S 0 ] , � * / / ,- . 0 - � . � ^ � � � 0 - 0 � � � � � � � . ] ] 0 ^ . ] , S 0 � 0 , ] S . ] . � + * � 0 * , ] ] * � S , S * 0 ) 0 � 0 , ] . .� � . ] ] 0 , + � � 0 � 0 S 0 / � * � . ) - * ] * � � . + + � 0 * � . + * ) - , ^ 0 * � 0 / / , � 0 ) . � � � � � � �

. 0 ] ^ 0 � � ] S , S * - . ] ] , � * S S ^ , � 0 * ) . - 0 � � . � S 0 - � . � ^ , / .

� � ] ^ 0 � � ] S , S * * S S . ) � S * . � ) 0 / / , � 0 ) . + * ) , ) + * ^ , ^ . � 0 - � 0 - . ] � . � ) , ] . - 0� * ) - * � � 1 � . �

� � . ^ . ] 0 / 0 ) , ^ . , ) + � . � � . � S 0 � ] S 0 / 0 � 0 � * � ) , , + � � 0 � 0 ^ . � ] S . ^ 0 * ^ 0 0 ) � * ^ / , � 0 * ) 0� � ] � � � � � � � � / � * � . ) - * � � � . � S , � * ] S , � ] 0 ) S . ^ * S . ] . � + * � 0 * � � � � � � � � � .^ 0 � . S . ) - * ] * � . ^ , � 0 * ) . - 0 � * S S ^ , � 0 * ) . � ] 0 / / , � 0 ) . ^ 0 � � ] S , ) S . . 0 ) � 1 � � �� � ] ] . - � . ) � * � . 0 / / , � 0 ) 0 / . / * ^ 0 � � , S . � � 1 � + . � 1 � - �

� � � 0 ) - 0 � 0 � ^ * + . - . ) . ] ] , � � * + 0 , � 0 * ) . - . 0 - , S 0 � * S S ^ , . ) - * , ] � ^ , / . - 0 � 1 � . � � . ] ] * 0 ) � 1 � �

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� 0 � � ^ , 1 � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � + � � � � � � � � � �� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � + � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �� � � � � � � ( # � + � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �� � � � � � � � � ( # � + � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � * # � � � + � � � � � � � � � � � � �� � � � � � � � � � � � � � � � � � � � � � * # � � � + � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � * # � � & ( ( # � +

! . ] ] , � � ^ , � � + + . � � 0 � , * � � . ^ � 0 , / * + � . ] , � * ] , S . + ) 0 + , - . ] � � � � � � � � ) * ). � � % + 0 . ) S . , - . ] 0 / 0 ) , ^ . + * / � ] . S , / . ) S . ] , � ^ . � . ) � , - . ] � � � � � � � � . - . � .

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a)

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� 0 � � ^ , 1 � � � � � � � � � � � � � � � � � � + � � � � � � � � � � * # � � � � � � � � � � � � � � � � � � � � � � � � � � �� � � � � � � � � � � � � + � � � � � � � � � � * # � � & ( ( # � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � +

R * ) ] � � * - . ] ] , S . + ) 0 + , - . ] � � � � � � � � � � � � � � � � � � � 0 . � * S � S * � � 0 ) - 0 * S �S . ) . ^ . � ) 0 / / , � 0 ) . , � � , � S , ) � , ) 0 S 0 - , - . ] ] . � * ^ � . ) S 0 * � � . ^ � , S . ! . ] ] 0 / / , � �0 ) . + � � 0 � . - . + * / . 0 ] ^ . � 0 - � * � ^ , - 0 . ) S . - 0 � . � ) , ] . - 0 � * ) - * � ^ . � . ) S . 0 ) , � .� � � . ) � , . ] 0 / 0 ) , S * ) . ] ] , � * S S ^ , � 0 * ) . � � 1 + �

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� ] � ^ , / . * S S . ) � S * , � . � � 0 S * - . ] � � � � � � � � � � � � � � � � � � � , 0 ) S ^ * - * S S * ] . + * ) �S ^ * � , ^ S 0 ) . � , S 0 � . - . ] � . � ) , ] . � 0 + * ) � . � � . ) � , * � ) 0 � * ^ � . ) S . ] � / 0 ) * � , * � � . ^ �� , S , + * ) � � . � S , S . + ) 0 + , � 0 � * ^ S . ^ , - 0 . S ^ * - . 0 - � � ] 0 + , S 0 ) . � , S 0 � 0 - 0 � . � S . � � , ,

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- 0 � S , ) � , � 5 � � � . � 5 � � � � � . � S * S 0 � * - 0 , ^ S . � , S S * . ^ 0 � * ] S * - , ] ] , ] � * ^ 0 S / *- 0 0 ) � . ^ � 0 * ) . - . � + ^ 0 S S * ) . ] + , � 0 S * ] * 4 � � � � � � ] � . S - 0 0 / / , � 0 ) 0 � , 0 ) * ] S ^ . , ] �S ^ 0 S 0 � 0 - 0 � ^ * � ] . / 0 � ] , / , � � 0 * ^ � , ^ S . - . 0 � � , ] 0 0 ) S ^ * - * S S 0 - , ] ] . ] . S S ^ * ) 0 + , - . ]� 0 � S . / , - 0 , + � � 0 � 0 � 0 * ) . � . - 0 , / * 0 � 0 � � 0 � ) 0 + , S 0 � 0 �

� � � � � � � � � � ] , + , ^ , S S . ^ 0 � S 0 + , - 0 � � . � S * � ^ * � ] . / , . � ) � 0 ) � * ] * � 0 � . ] - 00 ) S . ) � 0 S , ] � / 0 ) * � , / * ] S * , ] S , � 0 ) � , ] * ^ . , � � * ] � S * � ^ 0 � � . S S * , 0 � 0 � . ] + 0 ^ �+ * � S , ) S 0 � � . - * � ) � � ) S * � 0 , ) + * � � � * ) - * � + � ^ * * � ) � � ) S * ) . ^ * � � � * ) - *+ � 0 , ^ * � � * � � * S ^ * � , ^ . � � � � � � � � � 0 ) � � , ] � ) � � . S 0 � * - 0 0 / / , � 0 ) 0 . , � * ] S . , ) + � .- * � * ] , ] * ^ * ^ 0 / * � 0 * ) . � * � � * ) * . � � . ^ . ^ . � 0 ) S ^ * - * S S 0 - , ] ] , � � ] 0 + , � 0 * ) . - 0, ] + � ) . * � . ^ , � 0 * ) 0 - 0 ] S ^ , � � 0 * � + * / . ] , ] � * ^ 0 S / * - 0 0 ) � . ^ � 0 * ) . + � . � . �- ^ . / * ) . ] � ^ * � � 0 / * + , � 0 S * ] * � � * ^ 0 � 0 ) . - 0 S , ] 0 , ^ S . � , S S 0 . ] , � ^ . � . ) � , ) . ] ] * � � , � 0 * - 0 � * ^ � . ) S 0 + � . . / . S �S * ) * � , ^ S 0 + . ] ] . - 0 . ) . ^ � 0 , . � S ^ . / , / . ) S . . ] . � , S , � , ] 0 � . � ) , ] 0 + * � / 0 + 00 / � ^ . � � 0 * ) , ) * 0 ] ^ 0 � . ] , S * ^ . ] , � + 0 , ) - * S ^ , + + . � 0 / 0 ] 0 , � ^ � + 0 , S � ^ . - * � � S ., ] S . / � * - 0 . � � * � 0 � 0 * ) . ^ . ] , S 0 � , / . ) S . ] � ) � * � 5 5 4 � . + � . ^ � � � � � + 0 * .� . ^ � 0 ) � * ] * � ^ , / . , + � � 0 � 0 S * - , ] S . ] . � + * � 0 * � - . ] R R � � � � � � � � � � � � � � �

� � � � � � + 0 * . ] , / , S ^ 0 + . � * S * � . ) � 0 � 0 ] . + � . � , ] . � . + 0 - . ] ] , � . ] ] 0 + * ] , - 0 � ) ,/ , + + � 0 ) , � * S * � ^ , + , � � � 1 � �

� � � � � � � � � � � � � � � � � � � . � S * , ^ S . � , S S * � 0 � ^ . � . ) S , + * / . � ) , � * ^ S , - 0� � . S S 0 ) . � � ] � ) � * ] . + * ] * ) ) . � * ] . ^ 0 � � . � - . ] ] 0 / / , � 0 ) . + 0 � * ) * - . ] ] . ^ 0 � � .� + � ^ . . ] . � � . ^ / . ) S . � � 0 , - 0 S . + � . , ] S . ^ , ) * ] , � , ^ 0 , � 0 * ) . / . - 0 , - . ] ] 0 ) S . ) �� 0 S , ] � / 0 ) * � , - . ] � ^ , / . � ] / * - * / 0 � ] 0 * ^ . � . ^ . ] 0 / 0 ) , ^ ] . . - 0 ^ 0 + * ^ ^ . ^ ., ] S ^ 0 / . - 0 , ) 0 * , / . - 0 . ^ * � � � S . , � � ] 0 + , S . , S � S S . ] . + * ] * ) ) . � * ^ 0 � � . �, � . S S . - , ] � ^ * � ] . / , � ) � . � � 0 S * � . - ^ . / * � 0 � - . S S , � ] 0 , S , / . ) S . � ] 0 , ] �� * ^ 0 S / 0 0 - . , S 0 , S , ] . � + * � *

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� , + , � � , - . ] ] , ^ S . � , S S * . 0 ] � � � � � � � � � � � � � � � 0 � , ] S * 0 ) , ] + � ) 0 � ^ � � � 0 - 0� 0 � . ] - . ] ^ 0 � . ] , S * ^ . . , � 0 � � . � � � 0 ) - 0 � S � S S . ] . 0 / / , � 0 ) 0 + � . + * ) S . ) � , ) *- . ] ] . � * ^ � . ) S 0 , � � , � S , ) � , ] � / 0 ) * � . - , ^ . ) - . ^ . � 0 � 0 � 0 ] . ] , - 0 � . ^ . ) � , - 0^ 0 � � * � S , - . 0 � 0 � . ] - . ] R R � � � 1 � �

� � � � � � � � � � � � � � � � � � � � � � 0 � , ^ ] , - 0 � � S ^ 0 � + 0 , S . � � , ] S ^ 0 / . ) S 0 - . S S . � � � � � � � � � � � � * � � � � � � � � � � , � . + * ) - , + � . ^ 0 � � , ^ - 0 ) * ] . + * ] * ) ) . *] . ^ 0 � � . ^ 0 � � . S S 0 � , / . ) S . � � � , ) - * ) . ] ] 0 / / , � 0 ) . � 0 , ) * � 0 � 0 � 0 ] 0 - . ] ] . ^ 0 � � .� 0 � � + � ^ . ] � ) � * S � S S * * � , ^ S . - . ] � ^ , / . � , ] 0 � S ^ 0 � + . � , ) ) * � ) , � . ^ 0 * - �0 + 0 S , - * � � S , , ] ] . ] . S S ^ * ) 0 + , - . ] � 0 � S . / , - 0 , + � � 0 � 0 � 0 * ) . � � 0 ^ 0 � ^ . � . ) S , ) * �+ 0 * . � * � ) 0 � ^ 0 � � . � * + * ] * ) ) . � - . ] ] , � S . � � , 0 / / , � 0 ) . � - * � . � . � )) � / . ^ * + * � S , ) S . ] . � , S * , ] ] , � S ^ � S S � ^ , - . ] ^ 0 � . ] , S * ^ . � ) . ] ) * � S ^ * + , � *� � � � � � . � S * S 0 � * - 0 , ^ S . � , S S * � 0 S ^ * � , 0 ) 0 / / , � 0 ) 0 + � . + * ) S . ) � * ) * * � � . S �S 0 � , ^ S 0 + * ] , ^ / . ) S . � ^ 0 ] ] , ) S 0 . - . � � . � � * , � � * + 0 , S * , ] � ^ * � ] . / , - . 0 � �

� � � � � � � � - . � + ^ 0 S S * � 0 � , � , ) S 0 � * ^ 0 � 0 ) . - . ] ] . � � � � � � � � � � � � � � � � � � � . - , ^ 0 + . ^ + , ^ � 0 ) . ] ] � , ^ - � , ^ .- . ] ^ 0 � . ] , S * ^ . � + * / . � � 0 . � � . ^ * / . � ] 0 * � 0 � � * S S * � 0 ) � , S S 0 � 0 ] � * � ^ , + + , ^ 0 �+ * - 0 � * S * ) 0 , + � � 0 � 0 S * ^ . ) - . / * / . ) S , ) . , / . ) S . � + 0 . + � 0 � , ] + � ) 0 � 0 � . ] ) + � . ] . � . S S * ) * ) � 0 � / * ^ � , . � 0 , ) ) � ] ] , , ] � ^ * � . � � 0 ^ . - . ] S . / � * � � . � S * � ^ * � ] . / , - 0 � . ^ 0 � + . - , ] � � + + . � � 0 � * 0 ) � � , ) S * � 0 � . ^ 0 + , , ) + � .+ * ) � * ) S 0 ] � / 0 ) * � . - 0 / 0 ) * ^ . 0 ) S . ) � 0 S , . - � , � ) . � . S S * � 0 � 0 � * / * ] S *- 0 � . ^ � * � � 1 � �

� � � � � � � � � � � � � � . � S * S 0 � * - 0 , ^ S . � , S S * � + � . � 0 � ^ . � . ) S , + * / . � ) , � . ^ 0 .- 0 � 0 � . ] , ] S . ^ ) , S 0 - 0 ] � / 0 ) * � 0 S , � 0 ) / * - � ] * � - 0 � ^ , ) ] � ) � , � � � . ^ 0 * ^ . ,� � . ] ] , - . 0 � 0 � . ] + 0 ^ + * � S , ) S 0 � . � ) * - . 0 � 0 � * � S 0 + 0 - , ^ 0 / � * � . ^ . � � � . � � *+ 0 � 0 , + + * ) S . ) S , - 0 � ) , � � � ] 0 � 0 , � � , ^ � 0 , ] . - . ] ] 0 / / , � 0 ) . � � . � S 0 � �

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� � � � � � , � 0 � � * ) * ] . ^ 0 � � . * ] . + * ] * ) ) . - . ] ] 0 / / , � 0 ) . , � . + * ) - , + � . � 0+ * ) � 0 - . ^ 0 0 ] � ^ , / . * ^ 0 � 0 ) , ] . + * � � + * / . . � S , S * � , ] � , S * , ] ] , + � � 0 � 0 � 0 * ) .* � � � ^ . ] , � � , ^ * S , � 0 * ) . - 0 2 5 � � S 0 ] . , - , ] ] 0 ) . , ^ . S � S S . ] . 0 / / , � 0 ) 0 0 )/ * - * + * ) � * ^ / . , ] ] * ^ 0 . ) S , / . ) S * � S , ) - , ^ - � � � � � � � � � � � + * / � , 0 * ) * � � S � S S 0 0 � ^ , / . + � . 0 ) S . ^ . � � , ) * , ^ . . + * ) � * ^ �� . ) S 0 / * ] S * ] � / 0 ) * � . � ) . ] ) * � S ^ * + , � * 0 ] � ^ * � ] . / , � 0 � . ^ 0 + , � , � * ] * + * )� � � � � � � � � � � � � � � � � � � � � � . - ^ . / * 0 ) � . � � 0 S * , � � , ] . � S . ] ] , + 0 � S 0 , / *^ 0 � . ^ . ) - * � � , + , � � , - 0 S , ] . , ^ S . � , S S * . 0 ] � * � ^ , + + , ^ 0 + * - . ] ^ 0 � . ] , S * ^ . � 0 ] � . ) * / . ) * .] * � S . � � * - 0 � � , ) - * * � � . ^ � 0 , / * 0 ] � * ] . 0 ) � 0 . ) * � 0 * ^ ) * , - * + + � 0 * ) � - * �- * � * � * + � 0 � . + * ) - 0 ] , ) * � S ^ , ^ . S 0 ) , ^ 0 / , ) . 0 / � ^ . � � , - , ] ] , ] � + . � * ] , ^ .. 0 / � 0 . � , , ] + � ) 0 / 0 ) � S 0 � . ^ S * ^ ) , ^ . , ] ] * � S , S * ) * ^ / , ] . . � * S . ^ ) � * �� , / . ) S . , + � � 0 � 0 ^ . 0 / / , � 0 ) 0 ) * ) , � . S S . - , , ] * ) 0 � � , � . - 0 � + , ^ 0 + , � � *� S . � � * , � � 0 . ) . + * ) 0 ] � 0 � S . / , - 0 , + � � 0 � 0 � 0 * ) . - . ] S . ] . � + * � 0 * , 0 ) � ^ , ^ * � � * �] . � S . ] ] . S ^ * � � * � ^ 0 ] ] , ) S 0 � * � ^ , + + , ^ 0 + , ) * 0 � 0 � . ] + � . ^ . � S , ) * + * / . , + + . �+ , S 0 . ) * ) ^ 0 . � + * ) * , ] . � � . ^ . , ] S ^ 0 - , S 0 � . ) * ) - * � * � ) + . ^ S * S . / � *� � ^ * � * ^ � 0 * ) , ] . , ] ] , ] � / 0 ) * � 0 S , - . ] ] , � S . ] ] , � � � 1 � �

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� � � � � � � � �� � � � � � � � �� � � � � � � � �� � � � � � � � �� � � � � � � � �� � � � � � � � �� � � � � � � � �� � � � � � � � �

2)1)

� 0 � � ^ , 1 � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � * # � % ) * " & � � � � � � � � � � � � �� � � � � � � � � � � � � � � � � & � ) � $ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � + � � �� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �� � � � � � � � � � +

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1) 2) 3)

nei rettangoli di fig.1: bad columnIn questo gruppo di immagini vediamo tre fasi della pulizia di un frame:

nel cerchio di fig.2: bad pixel.

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R * / . � . - ^ . / * 0 ) � . � � 0 S * � � . � S 0 , ^ S . � , S S 0 � * ) * � , ^ S 0 + * ] , ^ / . ) S . - 0 % + 0 ] 0- , . ] 0 / 0 ) , ^ . , ) + � . � . ^ + � �. ] , � + 0 , ) * � � . � � * - . 0 ^ . � 0 - � 0 ) . ] ] , + * ] * ) ) , + . ) S ^ , ] .- . ] ] 0 / / , � 0 ) . � � ) , � * ^ S , - 0 � + * ] * ) ) , � . ^ S . � ^ , ] . � + * / � * � S , - , � ^ � � � 0 - 0 � �

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� � � � � � � � � � � � � � � � � � � �

negative superiore e inferiore.

Immagine a sud di BN:inizia la fase di scaricadopo l’acquisizione dellacontroparte negativa inferiore.

Immagine a nord di BN:si vede la fase di scaricadopo l’acquisizione dellastella e della sua contropartenegativa superiore.

1

2

Immagine contenente BN alcentro e parte delle sue controparti

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� . - ^ . / * � * 0 0 ) - . S S , � ] 0 * ] . S . + ) 0 + � . , - * S S , S . � . ^ ^ 0 � * ] � . ^ . � � . � S 0 � ^ * � ] . / 00 ) � � 4 ! . ] + * ^ � * - . ] ] . ] , � * ^ , � 0 * ) . - . 0 - , S 0 , + � � 0 � 0 S 0 � 0 ) * ] S ^ . � � 0 � * ) * 0 ) + * ) �S ^ , S 0 , ] S ^ 0 � ^ * � ] . / 0 ^ 0 � * ] S 0 , � . + * ) - , - . ] S 0 � * - 0 0 / / , � 0 ) . S ^ , S S , S * � � . - ^ . / *0 - . S S , � ] 0 0 ) � . � � 0 S *

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� ] / . S * - * - 0 ^ 0 + * � S ^ � � 0 * ) . + � . � . ^ ^ , . � � * � S * - 0 � . � � 0 S * + 0 � . ^ / . S S . ^ , - 0 ^ 0 / � * �� . ^ . ] , - 0 � S * ^ � 0 * ) . - * � � S , , ] ] . + * ) S ^ * � , ^ S 0 ) . � , S 0 � . . - 0 ^ 0 - � ^ ^ . 0 ] � � � � � � ,

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^ 0 + * � S ^ � � 0 * ) . � * S ^ , . � � . ^ . S � S S , � 0 , , � . S S , - , , ^ S . � , S S 0 � . ^ ] , + � 0 ^ 0 - � � 0 * ) .� . ^ ^ , ) ) * � ^ * � * � S . � ^ * + . - � ^ . , - . � � , S . � 0 � , � , ) S 0 ^ 0 � ^ . ) - . ^ . / * ] , - . � + ^ 0 � 0 * ) . - . ] ] , S . + ) 0 + , - 0 � � � � � � � � � � � � � � � � � �� 0 , � 0 � S , 0 ) � 1 � � . ^ � * S . ^ - . � + ^ 0 � . ^ . ] , ] � * ^ 0 S / * - 0 0 ) � . ^ � 0 * ) . � � , ) - * � ) ,) * S , � 0 * ) . + * ) � 0 � S . ) S . , � � . ] ] , - 0 S � S S * 0 ] ] , � * ^ * R * / . � 0 , - . S S * ) . ] + , � 0 S * ] * � ^ . + . - . ) S . � ] 0 / / , � 0 ) . , � S ^ * ) * / 0 + , ^ 0 � � ] S , 0 / �/ . ^ � , 0 ) � ) � * ) - * � , ^ 0 , � 0 ] . � - . ) * / 0 ) , S * � � � � � � � � � + � . + � 0 , / . ^ . / * � ) . ]� . � � 0 S * � ] � . � ) , ] . � � + � . , ^ ^ 0 � , - , ] ] , - 0 ^ . � 0 * ) . - 0 + * * ^ - 0 ) , S . � � � � � , ] S . / � * � � ) . ]� � ) S * � - . ] � 0 , ) * 0 / / , � 0 ) . � . - , S * - , �

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- * � . � ^ , � � ^ . � . ) S , ] , � � ) � 0 * ) . - 0 S ^ , � � . ^ 0 / . ) S * - . ] � 0 � S . / , � � � � � � . 0 ]� . � ) , ] . � ^ * � . ) 0 . ) S . - , ] ] , � * ^ � . ) S . + * � / 0 + , . � � � � � � � . 0 ] S . ^ / 0 ) . - 0 � � �� � � � � � � ] � ^ * � ] . / , + � . + 0 � 0 � * ) . . � � . ] ] * - 0 � , ] � S , ^ . ] , - 0 � S ^ 0 � � � 0 * ) . � . � � . � S *^ 0 � � ] S , � * � � 0 � 0 ] . � * ] * � . � 0 + * ) * � + . . � . S S 0 � , / . ) S . 0 ] � � � � � � � � � � ^ , / 0 S . * � � . ^ � , � 0 * ) . + * ) ] , S . + ) 0 + , - 0 � � � � � � � � � � ^ . + . - . ) S . / . ) S . - 0 � + � � � , �� 0 . ^ , , ^ ^ 0 � , S 0 , - � ) , � * � � 0 � 0 ] . � * ] � � 0 * ) . � � , + . ) - * � � ) S , ^ . 0 ] S . ] . � + * � 0 * � . ^ � *� ) , � * ^ � 0 * ) . - 0 + 0 . ] * � . ) � , � . � ) , ] . S ^ , / 0 S . � � * � S , / . ) S * - 0 � , ^ + * � . + * ) - 0) . ] ] , - 0 ^ . � 0 * ) . � � � 0 � * S . � , * S S . ) . ^ . �

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� � ] S . ^ � * S 0 � * - 0 . ^ ^ * ^ . + � . � 0 � � * + * / / . S S . ^ . . + , � � , S * - , ] ) * ) , ] ] 0 ) . , �/ . ) S * - . ] - . S . + S * ^ , ^ ^ , ' + * ) ] , - 0 ^ . � 0 * ) . - 0 + � * � � 0 ) � . ) * - - 0 ) � $ 0S ^ , S S , - . ] ] . ^ ^ * ^ . � 0 � � . ^ 0 * S ^ , � � . ] ] 0 . � � * � S 0 � * 0 + � �. � � * ] , � ) , � � � ) � 0 * ) .� * ) - , / . ) S , ] . � + 0 * . + � . ] , ^ 0 + * � S ^ � � 0 * ) . - . ] ] 0 / / , � 0 ) . � * � � , . � � . ^ . . � �� . S S � , S , + * ] * ) ) , � . ^ + * ] * ) ) , $ . � 0 � . ^ 0 + , S , ] . � 0 S � , � 0 * ) . . ) . + . � � , ^ 0 *+ * ^ ^ . � � . ^ ] , / . - 0 , ) S . � ) , ^ * S , � 0 * ) . - . ] ] 0 / / , � 0 ) . , + � � 0 � 0 S ,

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] 0 / / , � 0 ) . � 4 - � ] . + � 0 + * ] * ) ) . � * ) * � * ^ ) 0 S . - , ] � . S S * ^ . a �� � ,� * ] � � 0 * ) . � 0 * S S 0 . ) . / * ] S 0 � ] 0 + , ) - * 0 ] � . S S * ^ . � � � . ^ � � � � � ] , / , S ^ 0 + . 0 ) � . ^ � , - 0( � - . S S , , ) + � . - 0 � � � � � � � � � � � � � � , / , S ^ 0 + . � ^ 0 � � ] S , / , ] + * ) - 0 � 0 * ) , S , � - 0 + * ) � . � � . ) � , ] , � * ] � � 0 * ) . � . ) . ^ �, ] 0 � � , S , � . ^ - . � 0 � ) 0 + , S * � * 0 + � �. , ] S , / . ) S . + * ^ ^ * S S , - , ] ] , � ^ * � , � , � 0 * ) . - . ]� � � � � � . ^ ^ 0 � * ] � . ^ . 0 ] � ^ * � ] . / , � + * / . � 0 , � 0 � S * � � 0 + . ^ + , ) * - . ] ] . , � � ^ * � � 0 / , � 0 * ) 0- . ] ] , � * ] � � 0 * ) . 0 - . , ] . + � . � 0 - 0 � + * � S 0 ) * - , ] ] , � S . � � , . ) S ^ * � ) , S * ] ] . ^ , ) � , � � , �S , � , � * ] � � 0 * ) . � 0 � . % + , + . � . ^ � � . � S * S 0 � * - 0 � ^ * � ] . / , . � � . ] ] , � * ^ ) 0 S , - , ]� � � � � � � � � � � � � � � � + * ) � 0 ) + * ] * - 0 � * � 0 S 0 � 0 S ,

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