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', '7963', '9993', '2239', '7829', 'y', '1331', 'B', '6495', '3255', 'D', 'l', 'u', '2317', '7137', 'b', 'K', '5191', '5267', 'I', 'd', '3801', '6287', '5371', '1309', 'F', 'S', 'l', 'D', '8439', '1309', '9957', 'H', '4785', 'r', '1109', 'M', 'i', 'D', '8803']

4, 7963, 9993, 2239, 7829, 25, 1331, 2, 6495, 3255, 4, 12, 21, 2317, 7137, 2, 11, 5191, 5267, 9, 4, 3801, 6287, 5371, 1309, 6, 19, 12, 4, 8439, 1309, 9957, 8, 4785, 18, 1109, 13, 9, 4, 8803