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: ['8485', '7769', 'e', '1237', '2167', 'Q', '6107', '5255', '7133', 'c', '1409', '4009', 'O', '8481', '215', 'o', 'q', 'q', '9021', '8215', '2371', 'y', '5309']

8485, 7769, 5, 1237, 2167, 17, 6107, 5255, 7133, 3, 1409, 4009, 15, 8481, 215, 15, 17, 17, 9021, 8215, 2371, 25, 5309