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', '2537', '6529', '5389', '6583', 'R', 'Y', 'n', '1647', '1465', 'l', 'W', 'A', '8273', '1793', 'o', 'F', '8669', 'M', '7675', '9273', '8689', '5727', '7593', 'u', '2901', '4215', 's', 'o', '5811', '3889', '4263', '2689', '4539']

24, 2537, 6529, 5389, 6583, 18, 25, 14, 1647, 1465, 12, 23, 1, 8273, 1793, 15, 6, 8669, 13, 7675, 9273, 8689, 5727, 7593, 21, 2901, 4215, 19, 15, 5811, 3889, 4263, 2689, 4539