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: ['4483', '7747', 't', '2933', 'R', 'A', '4375', '1067', '8947', '1543', '2111', '7005', '3499', 'j', 'P', 'O', 'E', 'H', 'c', 'x', 'w', '8213', '9275', '1669', '4079', 'B', '7497', '4003', 'J', '4909', 'r', 'n', 'E', '5501', '1593', 'z', 'Y', 'V', '8237', '1255']

4483, 7747, 20, 2933, 18, 1, 4375, 1067, 8947, 1543, 2111, 7005, 3499, 10, 16, 15, 5, 8, 3, 24, 23, 8213, 9275, 1669, 4079, 2, 7497, 4003, 10, 4909, 18, 14, 5, 5501, 1593, 26, 25, 22, 8237, 1255