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: ['4167', '2919', '5683', '8799', '7575', '9945', '7983', 'G', '7157', 'n', '2897', 'N', 'E', '7399', '145', '2193', '2341', 'm', 'H', 'H', '4909', 'l', 'm', 'I', 'y']

4167, 2919, 5683, 8799, 7575, 9945, 7983, 7, 7157, 14, 2897, 14, 5, 7399, 145, 2193, 2341, 13, 8, 8, 4909, 12, 13, 9, 25