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.

['7949', '8047', 't', '9913', 'd', '8641', 'n', '8383', '7493', '8819', '6981', 'n', '6287', '8685', 'b', '7535']
7949, 8047, 20, 9913, 4, 8641, 14, 8383, 7493, 8819, 6981, 14, 6287, 8685, 2, 7535

['8897', '4785', 't', '6549', 'r', '9073', 'B']
8897, 4785, 20, 6549, 18, 9073, 2

['o', '5249', 'W', '2189', 'F', 'N', '801', '6123', '1235']

15, 5249, 23, 2189, 6, 14, 801, 6123, 1235