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', 'K', '6371', 'u', 'I', '8409', '9683', 'X', '4787', '2413', 'E', '8927', 'o', '4479', 'T', 'l', 'H', 'A', '7483', '6255', 'p', 'Y', 'e', '5517', 's', '2689', 'n', '3865', 'w', '4319', 'd', '7529', 'r', 'L', 'V', '737', 'C', 'q', '4947']

24, 11, 6371, 21, 9, 8409, 9683, 24, 4787, 2413, 5, 8927, 15, 4479, 20, 12, 8, 1, 7483, 6255, 16, 25, 5, 5517, 19, 2689, 14, 3865, 23, 4319, 4, 7529, 18, 12, 22, 737, 3, 17, 4947