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: ['9265', 's', 'i', 'G', 'p', '6027', 'W', '7327', '7291', 'B', '9787', '3051', '8277', 'l']

9265, 19, 9, 7, 16, 6027, 23, 7327, 7291, 2, 9787, 3051, 8277, 12