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: ['5405', 'V', 't', '1119', '6627', 'l', '3657']

5405, 22, 20, 1119, 6627, 12, 3657