Detailed Instructions: 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.
Problem:['4615', '3171', '557', '4193']
Solution:
4615, 3171, 557, 4193