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', '3545', '8523', '9315', 'o', '6385', 'O', 'Q', '6957', '4375', '3065', '1447', 'K', 'b', 'e', '9719']

24, 3545, 8523, 9315, 15, 6385, 15, 17, 6957, 4375, 3065, 1447, 11, 2, 5, 9719