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', '4399', 'h', '5217', 'W', '7167', 'X', 'p', 'J', 'G', '3687', 'H', '9897', '439', '5869', 'H', 'Z', 'y', '9989', '5', '9701', '6385', 'v']

15, 4399, 8, 5217, 23, 7167, 24, 16, 10, 7, 3687, 8, 9897, 439, 5869, 8, 26, 25, 9989, 5, 9701, 6385, 22