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: ['9339', '5463', '3381', 'L', '6447', 'v', '9715', '2329', 'Q', '919', 'T', '8141', 'b', 'h', 'E', 'Q', 'T', '4505', 'D', '2713', 'C', 'Z', 'Q', 'd', 'l', 'L', '7567']

9339, 5463, 3381, 12, 6447, 22, 9715, 2329, 17, 919, 20, 8141, 2, 8, 5, 17, 20, 4505, 4, 2713, 3, 26, 17, 4, 12, 12, 7567