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: ['q', '2019', 'l', '9405', 'A', '3655', '6443', '4813', 'F', '7631', 'C', '3765', '9367', '2141', 'k', 'x', '2817', 'a', '3691', 'L', '1637', '2607', 'n', '6453', '989', '6909', '6149', '1725', 'w', '11', 'A', '6677', 'J', 'r', '8371', 'k', 'O', '5241', 'a', '2069']

17, 2019, 12, 9405, 1, 3655, 6443, 4813, 6, 7631, 3, 3765, 9367, 2141, 11, 24, 2817, 1, 3691, 12, 1637, 2607, 14, 6453, 989, 6909, 6149, 1725, 23, 11, 1, 6677, 10, 18, 8371, 11, 15, 5241, 1, 2069