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: ['3553', 'E', 'd', '9545', '9833', 'e', 'X', 'h', 'Y', '813', 'n', '2407', 'V', 'F', 'Q', 'T', '3271', '1705', '3983', '7121', '3143', 'y', 'J', '85', '4543', 'j', 'T', 'S', '3701', '2071', 'v', '7149', '3019', '9531', 'y', 'G', '3533', '7109']

3553, 5, 4, 9545, 9833, 5, 24, 8, 25, 813, 14, 2407, 22, 6, 17, 20, 3271, 1705, 3983, 7121, 3143, 25, 10, 85, 4543, 10, 20, 19, 3701, 2071, 22, 7149, 3019, 9531, 25, 7, 3533, 7109