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: ['M', 'N', '9453', '6233', '3345', 'P', 'S', '157', '8745', '2129', '7495', 'C', 'F', 'N', '5145', '6931', '8719', 'N', '4025', 'f', '5353', 'w', 'J', 'E', 'h', '2593', 'O', 'W', 'I']

13, 14, 9453, 6233, 3345, 16, 19, 157, 8745, 2129, 7495, 3, 6, 14, 5145, 6931, 8719, 14, 4025, 6, 5353, 23, 10, 5, 8, 2593, 15, 23, 9