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: ['Q', '3661', '1673', '3427', 'Z', '3727', 'i', '3717', '5301', '1439', 'E', 'D', 'C', '6735', '8441', 'k', '2465', '2595', 'I', '8287', '4579', 'b', 'g', '491', 'n', 'L']

17, 3661, 1673, 3427, 26, 3727, 9, 3717, 5301, 1439, 5, 4, 3, 6735, 8441, 11, 2465, 2595, 9, 8287, 4579, 2, 7, 491, 14, 12