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: ['4663', 'h', '2783', '5197', '1291', '1559', '5631', 'y', '9869', 'q', '5001', 'y']

4663, 8, 2783, 5197, 1291, 1559, 5631, 25, 9869, 17, 5001, 25