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: ['9579', 'K', 'T', 'v', 'e', 'n', '4389', 'x', 'k', '3975', '31', 'g', 'v', 'K', 'G', '3201']

9579, 11, 20, 22, 5, 14, 4389, 24, 11, 3975, 31, 7, 22, 11, 7, 3201