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: ['d', '1641', '5559', 'b', 'v', '9791', '5363', 'p', 'L', 'w', 'O', '5689', 'h']

4, 1641, 5559, 2, 22, 9791, 5363, 16, 12, 23, 15, 5689, 8