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', 'A', '7541', 'Q', 'l', '6441', 'L', 'G', 'e', 'y', '8575', 'y', '8627', 'Z', 'j', 'J', '4411', 'n', 'n', 'v', '5675', '9641']

23, 1, 7541, 17, 12, 6441, 12, 7, 5, 25, 8575, 25, 8627, 26, 10, 10, 4411, 14, 14, 22, 5675, 9641