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: ['X', '8453', '6181', '7201', '2315', 'l', 'l', 'h', 'M', 'j', 'd', 'd', 'G', '765', '1275', 'b', 'A', 'V']

24, 8453, 6181, 7201, 2315, 12, 12, 8, 13, 10, 4, 4, 7, 765, 1275, 2, 1, 22