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: ['4833', '1077', 'g', '4895', 'G', '5959', 'n', 'm', '5001', '6211', 'W', 'K', '2407', 'z', '1529', 'D', '2763', '5731']

4833, 1077, 7, 4895, 7, 5959, 14, 13, 5001, 6211, 23, 11, 2407, 26, 1529, 4, 2763, 5731