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: ['F', '897', 'N', '9073', '5353', '9885', '5709', '6263', '3521', '7589', 'm', '8537', 'G', 'D', '95']

6, 897, 14, 9073, 5353, 9885, 5709, 6263, 3521, 7589, 13, 8537, 7, 4, 95