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: ['n', 'v', '8863', '9821', 'M', 'l', 'L', '1599', '5659', 'S', '7297', 'M', 'H', 'g', 'z', '4721', '3535', '8319', '3021', '8693', 'E', '2949', '6333', '7599', 'V', 'P', 'X', 'z', 'P', '2431', '3313', 'c', 'J', '2419', 'g', 'E']

14, 22, 8863, 9821, 13, 12, 12, 1599, 5659, 19, 7297, 13, 8, 7, 26, 4721, 3535, 8319, 3021, 8693, 5, 2949, 6333, 7599, 22, 16, 24, 26, 16, 2431, 3313, 3, 10, 2419, 7, 5