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: ['C', 'J', '3213', '5291', 'W', '9231', 'S', 'L', '221', 'q', '2983', '3493', '8681', 'k', '1033', 'V', '7911', '8577', 'k', 'I', '5469', 'P', '6117', 'I', '6881', '2747', 'N', 'G', '8493', '1557', '229', 'c']

3, 10, 3213, 5291, 23, 9231, 19, 12, 221, 17, 2983, 3493, 8681, 11, 1033, 22, 7911, 8577, 11, 9, 5469, 16, 6117, 9, 6881, 2747, 14, 7, 8493, 1557, 229, 3