opti-a1opti-a2opti-a3opti-a4opti-a5opti-a6opti-a7opti-a8opti-a9opti-b1opti-b2opti-b3opti-b4opti-b5opti-b6opti-b7opti-b8opti-b9opti-c1opti-c2opti-c3opti-c4opti-c5opti-c6opti-c7opti-c8opti-c9opti-d1opti-d2opti-d3opti-d4opti-d5opti-d6opti-d7opti-d8opti-d9opti-e1opti-e2opti-e3opti-e4opti-e5opti-e6opti-e7opti-e8opti-e9opti-f1opti-f2opti-f3opti-f4opti...
