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: ['3353', 'c', '9201', '5157', '2661', '6125', '2705', '2927', '893', '9263', '2089', 'M', 'l', 'j', '47']

3353, 3, 9201, 5157, 2661, 6125, 2705, 2927, 893, 9263, 2089, 13, 12, 10, 47