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: ['h', 'H', '2495', '6039', 'X', 'j', 'Q', '8815', 'F', 's', 'x', '3047', '8053', 'M', 'C', '9103', 'N', 'V', 'u', '6309']

8, 8, 2495, 6039, 24, 10, 17, 8815, 6, 19, 24, 3047, 8053, 13, 3, 9103, 14, 22, 21, 6309