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: ['m', 't', '2685', 'g', '7211', '8297', '7299', 'm', '4545', '1383', '5779']

13, 20, 2685, 7, 7211, 8297, 7299, 13, 4545, 1383, 5779