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: ['9431', '7963', '501', '6211', '4131', '7617', 'c', 'I', '2383', 'u', '9661', 'K', '871', '6981', 'l', 'P', 'y', 'T', '3349', 'T', 'S', '9797', '7853', '1301', 'G', 'v', 'k', '6049', '6451', 'g', 'Z', '2363', 'o', '9519', 'e', 'A', 'W', 't', 'G']

9431, 7963, 501, 6211, 4131, 7617, 3, 9, 2383, 21, 9661, 11, 871, 6981, 12, 16, 25, 20, 3349, 20, 19, 9797, 7853, 1301, 7, 22, 11, 6049, 6451, 7, 26, 2363, 15, 9519, 5, 1, 23, 20, 7