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: ['x', '4821', '5509', '6633', '1457', '8899', '6567', '7691', '8849', '1337', 'Q', '7325', '4445', '5835', 'r', '4495', 'z', '2919', 'X', '6567', '9177', '8549', 'd', 'q', 'V', 'g', 'D', 'p']

24, 4821, 5509, 6633, 1457, 8899, 6567, 7691, 8849, 1337, 17, 7325, 4445, 5835, 18, 4495, 26, 2919, 24, 6567, 9177, 8549, 4, 17, 22, 7, 4, 16