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: ['1653', '2453', '2053', 'I', 'w', 't', 'm']

1653, 2453, 2053, 9, 23, 20, 13