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.

['4481', '3957', 'l', '257', 'Y', '6271', 'a', 'a', '9103', '5057', 'g', '8273', '1475', '3583', '3399', 'j', 'O', 'I', '2499', '8301', 'a', 'H', 'l', '903', 'n', '8951', 'U', 'm', 'i', 'R', '6215', 'l', 'f', '407', 'F', '9303']
4481, 3957, 12, 257, 25, 6271, 1, 1, 9103, 5057, 7, 8273, 1475, 3583, 3399, 10, 15, 9, 2499, 8301, 1, 8, 12, 903, 14, 8951, 21, 13, 9, 18, 6215, 12, 6, 407, 6, 9303

['F', 'A', 'A', '5729', '6717', '9171', '2245', '5017', 'T', '8013', '9991', 'o', 'n', 'e', 'n', 'G', 'G', '6581']
6, 1, 1, 5729, 6717, 9171, 2245, 5017, 20, 8013, 9991, 15, 14, 5, 14, 7, 7, 6581

['6727', 'R', '3613', 'l', '5399', 'k']

6727, 18, 3613, 12, 5399, 11