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: ['a', 'D', 'q', 'w', '6693', 'O', '8325', 'w', '8903', 'l', '9361', 'e', '7757', 'Q', '2761', 'e', '1459', 'L', 'w', 'K', 'I', 'B']

1, 4, 17, 23, 6693, 15, 8325, 23, 8903, 12, 9361, 5, 7757, 17, 2761, 5, 1459, 12, 23, 11, 9, 2