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: ['o', '5685', '4451', 'y', 'S', 'k', 'C', '9043', '2901', 'b', 'B', 'j', '6995', 'g', '5769', '3521', 'j', 'X', '2179', 'T', 'w']

15, 5685, 4451, 25, 19, 11, 3, 9043, 2901, 2, 2, 10, 6995, 7, 5769, 3521, 10, 24, 2179, 20, 23