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: ['V', 'M', 'Y', '4663', '3403', 'q', 't', '7575', 'y']

22, 13, 25, 4663, 3403, 17, 20, 7575, 25