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: ['3217', '2229', 'f', 'B', '6569', 'u', '3065', '7359', 'r', '5457', 'q', 'O', 'k']

3217, 2229, 6, 2, 6569, 21, 3065, 7359, 18, 5457, 17, 15, 11