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: ['D', 'j', 'W', 'i', '7213', '7963', 'p', '3099', 'y', '2605', '1239', '9339', 'j', '399', '2309', '1589', 'x', 'X', 'V', '9629', 'h', 'b', 'N', 'q']

4, 10, 23, 9, 7213, 7963, 16, 3099, 25, 2605, 1239, 9339, 10, 399, 2309, 1589, 24, 24, 22, 9629, 8, 2, 14, 17