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: ['G', '3459', 'F', 'k', 'X', 'h', '9653', '9089', 'c', '6379', 'f']

7, 3459, 6, 11, 24, 8, 9653, 9089, 3, 6379, 6