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: ['s', 'E', '8319', 'p', 'b', 'b', 'f', '8911', 'S', '6313', '7551', '2553', 'w', '5851', 'm', 'P', 'Y', '333', 'p', 'T', 'Z', '9581']

19, 5, 8319, 16, 2, 2, 6, 8911, 19, 6313, 7551, 2553, 23, 5851, 13, 16, 25, 333, 16, 20, 26, 9581