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: ['a', '6515', '1185', 'o', '7781', '2213', '6077', '2461', '8771', 'S', 'L', 'P', '9841', 'P', '7851', 's', '6149', 'r', '7129', '3325', 'X', '8229', 'h', 'J', 'Y', '3525', '3915', '8663', 'W', '2323', 'B', 'x', 'd', '4263', 'w', 'o', '4645', 'w']

1, 6515, 1185, 15, 7781, 2213, 6077, 2461, 8771, 19, 12, 16, 9841, 16, 7851, 19, 6149, 18, 7129, 3325, 24, 8229, 8, 10, 25, 3525, 3915, 8663, 23, 2323, 2, 24, 4, 4263, 23, 15, 4645, 23