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: ['8501', '237', 'K', '6447', 'm', '3737', '5283', '1923', 'Q', 'b', '3547', '2583', 'h', 'h', '6097', 'c', 'J', 'O', '6009', 'B', 'S', '1957', 'u', '4751', '8867', 'p', 'M', '5503']

8501, 237, 11, 6447, 13, 3737, 5283, 1923, 17, 2, 3547, 2583, 8, 8, 6097, 3, 10, 15, 6009, 2, 19, 1957, 21, 4751, 8867, 16, 13, 5503