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: ['w', '723', 'm', '4111', 'L', '4315', 'm', '4199', 'h']

23, 723, 13, 4111, 12, 4315, 13, 4199, 8