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: ['9383', 'X', '9699', '9357', '1369', '2355', '8233', 'F', '8591', 'c', '9407', 'W', 'f', '2179', 'L', '5949', '4681', 'G', '5073', '871', 'Q', 'b', 'p', '6727', '1197', '1909']

9383, 24, 9699, 9357, 1369, 2355, 8233, 6, 8591, 3, 9407, 23, 6, 2179, 12, 5949, 4681, 7, 5073, 871, 17, 2, 16, 6727, 1197, 1909