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: ['m', 'O', 'h', '6193', '6885', '6349', '9543', '263', '4301', 'V', 'g']

13, 15, 8, 6193, 6885, 6349, 9543, 263, 4301, 22, 7