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: ['c', '5445', '4573', '7153', 'A', '5337', '8017', 'x', 'l', '3583', '3363', 'k', 'P', '4521', '4941', 'Y', 'l', '9053', '2817', '3619', 'v', '5193', 'n', '8659', '2427']

3, 5445, 4573, 7153, 1, 5337, 8017, 24, 12, 3583, 3363, 11, 16, 4521, 4941, 25, 12, 9053, 2817, 3619, 22, 5193, 14, 8659, 2427