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: ['9317', 'W', '6313', 'A', '3789', 'M']

9317, 23, 6313, 1, 3789, 13