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: ['5541', '9965', 'V', '4097', 'S', 'O', '3239', '9779', '2051', '6377', 'I', 'P', '337', 'm', 'k', '4349', 'H', 'Z', 'l', '9053', 'M', 'k', '7005', '671', 'k', '8201']

5541, 9965, 22, 4097, 19, 15, 3239, 9779, 2051, 6377, 9, 16, 337, 13, 11, 4349, 8, 26, 12, 9053, 13, 11, 7005, 671, 11, 8201