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: ['E', '8023', 'Y', 'z', 'O', 'l', 's', '5213', 'p', 'T', 'J', '4557', 'x', '5035', '3471', '6673', 'A', 'L', '277', 'Z', '2505', 'G', '2765']

5, 8023, 25, 26, 15, 12, 19, 5213, 16, 20, 10, 4557, 24, 5035, 3471, 6673, 1, 12, 277, 26, 2505, 7, 2765