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: ['8741', 'A', '9651', '4189', '1367', 'y', '7167', '4309', '2361', 'R', '5889', 'M', '7867', 'a', 'i', 'O', '5675', '983', 'v', 'G', 'V']

8741, 1, 9651, 4189, 1367, 25, 7167, 4309, 2361, 18, 5889, 13, 7867, 1, 9, 15, 5675, 983, 22, 7, 22