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: ['175', '9073', 'L', '4105', 'Y', '2477', 'D', 'T', '9307', '8023', '3147', 'S', '6705', 'b', '7299', 'E', 'b', '1971', 'b', '5095', '7747', 'T', 'l', '7807', 'o', 'f', 'W', '3501', 'Q', 'q', 'l', 'T']

175, 9073, 12, 4105, 25, 2477, 4, 20, 9307, 8023, 3147, 19, 6705, 2, 7299, 5, 2, 1971, 2, 5095, 7747, 20, 12, 7807, 15, 6, 23, 3501, 17, 17, 12, 20