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: ['9993', 'X', 'A', '5205', '2617', '6945', '7987', '4909', 'X', '5815', 'q', 'y', '3391', '2109', 'N', 'Y', '7369', '7475', 'd', '2203', '1577', '7635', '6511', '7199', '7547', '7351', '849', '99', 'G', 'V', '3673', 'i', 'f', '4371', '4571']

9993, 24, 1, 5205, 2617, 6945, 7987, 4909, 24, 5815, 17, 25, 3391, 2109, 14, 25, 7369, 7475, 4, 2203, 1577, 7635, 6511, 7199, 7547, 7351, 849, 99, 7, 22, 3673, 9, 6, 4371, 4571