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: ['M', '8025', 'R', 's', '1231', '7511', '1555', '8295', 'H', '7317', '6483', 'K', '3269', 'l', '7885', 'd', '8169', 'c', 'F', '7863', '8243', 'W', '8405', '8547', '1393']

13, 8025, 18, 19, 1231, 7511, 1555, 8295, 8, 7317, 6483, 11, 3269, 12, 7885, 4, 8169, 3, 6, 7863, 8243, 23, 8405, 8547, 1393