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: ['7973', 'D', 'g', '7343', '3061', '9017', 'H', '8833', 'J', 'h', 't', '1927', '2191', 'T']

7973, 4, 7, 7343, 3061, 9017, 8, 8833, 10, 8, 20, 1927, 2191, 20