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: ['I', '5447', '9629', 'p', 'm', '2957', '1313', 'Y', 'S', '6637', '6175', 'G', 'C', 'H', 'x', '2697', '5117', '8585', 'j', 'L', '4625', 'E', '8921', 'I', '1883', 'M']

9, 5447, 9629, 16, 13, 2957, 1313, 25, 19, 6637, 6175, 7, 3, 8, 24, 2697, 5117, 8585, 10, 12, 4625, 5, 8921, 9, 1883, 13