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: ['2481', '4309', 'G', 't', 'F', 'C', 'R', 'J', 'i', '4105', 't', '287', '3135', 'Z', 'X', 'Y', 'H', 'f', '4673', '2057', '8857', '3293', '1113', '565', 'v', 'Y', 'b', 'P', '9527', 'S', 'C', 'G', '7537', 'v']

2481, 4309, 7, 20, 6, 3, 18, 10, 9, 4105, 20, 287, 3135, 26, 24, 25, 8, 6, 4673, 2057, 8857, 3293, 1113, 565, 22, 25, 2, 16, 9527, 19, 3, 7, 7537, 22