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: ['B', '5393', '8097', '2269', 'k', 'a', 'L', '2759', 'E', '7967', '865', '8365', '5047', '2091', '9921', 'e', 'h', 'M', 'l', '2257']

2, 5393, 8097, 2269, 11, 1, 12, 2759, 5, 7967, 865, 8365, 5047, 2091, 9921, 5, 8, 13, 12, 2257