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: ['4477', '1605', 'T', 'G', 'm', 'E', '1101', '6153', '243', 'G', '6575', 'L']

4477, 1605, 20, 7, 13, 5, 1101, 6153, 243, 7, 6575, 12