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: ['G', 'O', '6567', 'Z', '8421', 'h', '5415', 'f', 'G', '9477', 's', 'd', '9037', 'g', 'M', 'z', '6753', '3457', 'K', 'h', 'Q', '5491', '1467', 't', '8981', 'q', 'm', 'e', '7055', '4325']

7, 15, 6567, 26, 8421, 8, 5415, 6, 7, 9477, 19, 4, 9037, 7, 13, 26, 6753, 3457, 11, 8, 17, 5491, 1467, 20, 8981, 17, 13, 5, 7055, 4325