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: ['V', '6551', '2677', '1903', 'E', 'a', 'e', 'p', 'I', 'X', '7947', 'g', '8263']

22, 6551, 2677, 1903, 5, 1, 5, 16, 9, 24, 7947, 7, 8263