In this task, you are given an input list A. You need to convert all the alphabets in the list with a number representing their position in the English alphabet. E.g., replace A by 1, B by 2, a by 1, b by 2, and so on.

['9855', 'K', 'l', '9887', '3421', 'T', 'G', '1611', 'o', '55', 'F', '1667', 'R', '7525', '6091', 'I']
9855, 11, 12, 9887, 3421, 20, 7, 1611, 15, 55, 6, 1667, 18, 7525, 6091, 9

['8711', 'e', '5951', 'Y', 'S', 'V', '2141', 'g', 'R', '627', '8803', 'q', '9501', '1999', 'S', '2115', 'P', '7185', 'r', 'c', 'E', 'J', '2721', 'a', 'd', '6801', '7393', '2427', '4311', 't', 'r', 'h', '3429']
8711, 5, 5951, 25, 19, 22, 2141, 7, 18, 627, 8803, 17, 9501, 1999, 19, 2115, 16, 7185, 18, 3, 5, 10, 2721, 1, 4, 6801, 7393, 2427, 4311, 20, 18, 8, 3429

['I', 'P', 'n', '5483', '777', '5057', 'q', 'c', 'u', 'F', 'f', '3375', 'n', 'q', 'o', 'u', 'n', '2351', '9355', '1535', '7223', '6289', '6747', '8195', 'd', '6793', 'J', '5321', 'Z', 'G', 'L', '923', 'R', 'Z']

9, 16, 14, 5483, 777, 5057, 17, 3, 21, 6, 6, 3375, 14, 17, 15, 21, 14, 2351, 9355, 1535, 7223, 6289, 6747, 8195, 4, 6793, 10, 5321, 26, 7, 12, 923, 18, 26