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: ['4437', 'X', 'o', '8253', '9057', '6047', '8161', '9819', '3329', '4259', '1101', 'v', '317', 'c', '535', '7531', 'k', 'y', '4923', 'y', '9777', 'M', '3695', 'M', 'Y', '3869', 'U', 'I', '2393', '4255', '157', '8787']

4437, 24, 15, 8253, 9057, 6047, 8161, 9819, 3329, 4259, 1101, 22, 317, 3, 535, 7531, 11, 25, 4923, 25, 9777, 13, 3695, 13, 25, 3869, 21, 9, 2393, 4255, 157, 8787