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: ['7327', '1299', '9441', '1467', '6243', '5713', '5001', '8641', '3391', '4473', 'P', '9307', 'f', '2413', 'x', '7671', '7705', '9479', '2131', 's', '5543', 'C', 'i', '6673', '7043']

7327, 1299, 9441, 1467, 6243, 5713, 5001, 8641, 3391, 4473, 16, 9307, 6, 2413, 24, 7671, 7705, 9479, 2131, 19, 5543, 3, 9, 6673, 7043