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: ['4471', 'Q', 'H', '1381', 'Z', '3813', 'Q']

4471, 17, 8, 1381, 26, 3813, 17