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.

['i', '1441', '397', 'S', '8833', '9829', 'g', 'U', 'W', '9651', '9403', '7013', '8445', 'D', 'M']
9, 1441, 397, 19, 8833, 9829, 7, 21, 23, 9651, 9403, 7013, 8445, 4, 13

['r', 'G', '8025', '4787', '4699', '4479', 'n', 'B', 'm', 'm', '3519', '8401', 'W', 'n', 'a', '9785', 'h', 'i', '6211', '3885', '3351', 'S', 'Q', 'M', '1743', 'X']
18, 7, 8025, 4787, 4699, 4479, 14, 2, 13, 13, 3519, 8401, 23, 14, 1, 9785, 8, 9, 6211, 3885, 3351, 19, 17, 13, 1743, 24

['3951', '3373', '4875', 'a', '385', 'G', 'T', 'L', 'y', '997', 'C', '2883', 'X', '943', 'D', '9483', 'y', 'v', 'C', '559']

3951, 3373, 4875, 1, 385, 7, 20, 12, 25, 997, 3, 2883, 24, 943, 4, 9483, 25, 22, 3, 559