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: ['Y', 'z', '9383', 'c', '5181', '7167', 'q', '1131', 'Y', '8047', 'E', 'i', 'K', 'R', '1063', 'z', 's', 'H', 'h', 'Y', '5251', '1039', '7747', 'E', 'z', '8087', '6389']

25, 26, 9383, 3, 5181, 7167, 17, 1131, 25, 8047, 5, 9, 11, 18, 1063, 26, 19, 8, 8, 25, 5251, 1039, 7747, 5, 26, 8087, 6389