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: ['z', 'Y', 'H', 'Z', 'e', 'k', '3921', '4993', '9093', 'w', 'W', 'h', '2229', '7469', 'L', '6911', 'k', '8543', '5541', '1597', 'j']

26, 25, 8, 26, 5, 11, 3921, 4993, 9093, 23, 23, 8, 2229, 7469, 12, 6911, 11, 8543, 5541, 1597, 10