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: ['8657', 'g', 'H', 'G', 'o', '9457', 'm', 'p', 's', '8861', '649', 't', '5391', '5483', 'b', '3839', 'p', 'B', '5227', 'K', '7601', 's', '2895', 'J', '8757', '6323', 'k', '717', 'c', 'e', 'T', 'c', '8749', 'W', '6231', 'R', '7917', '4669', 'q', 'a']

8657, 7, 8, 7, 15, 9457, 13, 16, 19, 8861, 649, 20, 5391, 5483, 2, 3839, 16, 2, 5227, 11, 7601, 19, 2895, 10, 8757, 6323, 11, 717, 3, 5, 20, 3, 8749, 23, 6231, 18, 7917, 4669, 17, 1