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: ['G', 'W', '6677', 'e', 'f', '3373', 'E', '1985', 'i', 'M', 'n', 'T']

7, 23, 6677, 5, 6, 3373, 5, 1985, 9, 13, 14, 20