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: ['9541', 'q', '4885', '3511', '2661', 'Z', '4601', '6075', 'p', '659', '1155', '3051', 'Y', 'p', 'T', 'v', 'F', 'd', 'L', '2943', '1509', '8325', 'e', 'd', 'b', 'l', '3579', 'H', '2457', 'c', 'Q', '7537', '1451', '7471', 'f', 'd', '4453', 'C']

9541, 17, 4885, 3511, 2661, 26, 4601, 6075, 16, 659, 1155, 3051, 25, 16, 20, 22, 6, 4, 12, 2943, 1509, 8325, 5, 4, 2, 12, 3579, 8, 2457, 3, 17, 7537, 1451, 7471, 6, 4, 4453, 3