Definition: 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.
Input: ['N', '8223', 'T', '7119', '569', 'd', '3575', 'f', '409', '6169', '4991', 'K', 'H', '1207', '2493', '5751', '8297', '5867', 'P', 'g', '8011', 'x', '1181', '2951', 'Y', 'M', '5641', '9217', '3413', '5085', 'y', 'O', 'S']

14, 8223, 20, 7119, 569, 4, 3575, 6, 409, 6169, 4991, 11, 8, 1207, 2493, 5751, 8297, 5867, 16, 7, 8011, 24, 1181, 2951, 25, 13, 5641, 9217, 3413, 5085, 25, 15, 19