8/14/2019 lecture5 twoup 1/7 8/14/2019 lecture5 twoup 2/7 8/14/2019 lecture5 twoup 3/7 8/14/2019 lecture5 twoup 4/7 - - 8/14/2019 lecture5 twoup 5/7 8/14/2019 lecture5 twoup 6/7 - - - - 8/14/2019 lecture5 twoup 7/7 -