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: ['5119', '1787', '8661', '6939', '6547', 'A', '9909', 'h', '6005', 'O', '9297', '8143', 'Z', 'G', 'B', '5799', 'B', 'E', 'A', 'K', '7697', '5123', '7867', 'q', '8947', 'X', '7361', 'F', '2631', '5863', '1225', '7705', 'm']

5119, 1787, 8661, 6939, 6547, 1, 9909, 8, 6005, 15, 9297, 8143, 26, 7, 2, 5799, 2, 5, 1, 11, 7697, 5123, 7867, 17, 8947, 24, 7361, 6, 2631, 5863, 1225, 7705, 13