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: ['x', '8197', 'l', '5979', 'Y', '7427', 't', 'b', '6551', '293', 'F', '7241', 'F', '6751', 'h', '401', 'L', '661', 'k', '6557', '6573', '8715', '6625', '7189', 'G']

24, 8197, 12, 5979, 25, 7427, 20, 2, 6551, 293, 6, 7241, 6, 6751, 8, 401, 12, 661, 11, 6557, 6573, 8715, 6625, 7189, 7