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: ['6631', 'i', '1273', '9233', 'p', 'p', 'v', '3629', 'r', '3317', 't', '9243']

6631, 9, 1273, 9233, 16, 16, 22, 3629, 18, 3317, 20, 9243