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: ['B', 'r', '8819', 'W', 'D', 'M', 'E', 'K', 'L', '3765', '2809', '1259', '9017', 'v', '4325', 'l', '1699', '9755', 'G', 'F', 'V', '8777', 'J', '2659', '9207', 'm']

2, 18, 8819, 23, 4, 13, 5, 11, 12, 3765, 2809, 1259, 9017, 22, 4325, 12, 1699, 9755, 7, 6, 22, 8777, 10, 2659, 9207, 13