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: ['f', 'K', 'x', 'v', '7939', 'l', '7297', 'G', '4457', '2173', 'T', '4641', '6391', '6741', '2809', '4089', '5941', '4107', '4747', 'a', '7929', '3259', 'h', '6645', '169', '233', '3539', '2987', '523', 'w', 'o', 's', '5421', '9725', 'q']

6, 11, 24, 22, 7939, 12, 7297, 7, 4457, 2173, 20, 4641, 6391, 6741, 2809, 4089, 5941, 4107, 4747, 1, 7929, 3259, 8, 6645, 169, 233, 3539, 2987, 523, 23, 15, 19, 5421, 9725, 17