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: ['569', 'F', '9699', '9407', 'm', '9487', '2241', 'v', '1231', '9541', 'O', 'D', '9317', '85', 'd', 'x', 'w', '6113', 'H', 'n', 'L']

569, 6, 9699, 9407, 13, 9487, 2241, 22, 1231, 9541, 15, 4, 9317, 85, 4, 24, 23, 6113, 8, 14, 12