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: ['p', '7263', '6579', 'P', 'N', '7001', 's', 'P', 'M', '9193', '313', 'b', 'H', 'M', 's', '3143', '8005', '5875', '3749', '1691', 'X', 'c', '6497', '9561', '6975', '4501', 'q', '2857', 'b', 'y', 'k', 'H', 't', '9125', '8125', '7765', '4791', '9759']

16, 7263, 6579, 16, 14, 7001, 19, 16, 13, 9193, 313, 2, 8, 13, 19, 3143, 8005, 5875, 3749, 1691, 24, 3, 6497, 9561, 6975, 4501, 17, 2857, 2, 25, 11, 8, 20, 9125, 8125, 7765, 4791, 9759