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: ['1435', '6441', '4791', '9005', 'b', '7733', '1291', '6417', '5121', 'd', 'b', 'r', '2127', 'A', 'b', 'n', '4827', 'X', '8661', '7085', '6721', '8683', '3859', 'y', '3857']

1435, 6441, 4791, 9005, 2, 7733, 1291, 6417, 5121, 4, 2, 18, 2127, 1, 2, 14, 4827, 24, 8661, 7085, 6721, 8683, 3859, 25, 3857