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: ['8079', '5033', 'k', '8357', '3665', 'W']

8079, 5033, 11, 8357, 3665, 23