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: ['Y', '3803', '8319', '1233', '3317', 's', 'H', '7465', 'B', 'J', 'P', '1833', 'v', '1589', '6589', 'r', '6443', '5935', 's', '8495', 'H', 'S', '7279', '7135', '5933', '3487', 'J', '1395', '9127', '5553', 'i', 'o', 'X']

25, 3803, 8319, 1233, 3317, 19, 8, 7465, 2, 10, 16, 1833, 22, 1589, 6589, 18, 6443, 5935, 19, 8495, 8, 19, 7279, 7135, 5933, 3487, 10, 1395, 9127, 5553, 9, 15, 24