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: ['x', '6633', 'r', '3167', '1097', 'y', '4463', 'K', 'i', '3413', 'F', '4865', '3831', '2025', '2715', 'i', 'a', '5385', '7121', 't', 'l', '6453', 'p', 'C']

24, 6633, 18, 3167, 1097, 25, 4463, 11, 9, 3413, 6, 4865, 3831, 2025, 2715, 9, 1, 5385, 7121, 20, 12, 6453, 16, 3