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: ['9069', '6609', '3811', 'B', 'h', 'm']

9069, 6609, 3811, 2, 8, 13