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: ['6387', 'V', '3635', 'R', '3001', '4893', 'G', 'S', 'k', '6767', 'H', '2901', 'm', 'Q', 'L', '1981', '6983', '2773', '8055', '9359', '7881', '4711', 'i', '6525', '2169', '7369', '177', '8887', '9827', 'm', '5427', 'y', 'G', 'E', '6361', '1555', '1907', '3279']

6387, 22, 3635, 18, 3001, 4893, 7, 19, 11, 6767, 8, 2901, 13, 17, 12, 1981, 6983, 2773, 8055, 9359, 7881, 4711, 9, 6525, 2169, 7369, 177, 8887, 9827, 13, 5427, 25, 7, 5, 6361, 1555, 1907, 3279