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: ['5641', '6033', '6745', '1109', 'N', 'F', 'l', '4219', '2343', '9551', 'S', 'E', 'y', '5115', '1489', '4737', 'G', 'x', 'o', 'Q', 'm', '3661']

5641, 6033, 6745, 1109, 14, 6, 12, 4219, 2343, 9551, 19, 5, 25, 5115, 1489, 4737, 7, 24, 15, 17, 13, 3661