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: ['d', '6963', '9479', 'I', '8059', 'G', '3291', 'N', '5665', 'y', 'J', '7073', 'K', '2717', '5259', 'C', '5919', 'O', '1133', 'n', 'Q', 's', '5537', '8395', 'x', '6793', '2721', '6975', '991', '6695', '5223', '5877', 'G', '517', 'L']

4, 6963, 9479, 9, 8059, 7, 3291, 14, 5665, 25, 10, 7073, 11, 2717, 5259, 3, 5919, 15, 1133, 14, 17, 19, 5537, 8395, 24, 6793, 2721, 6975, 991, 6695, 5223, 5877, 7, 517, 12