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: ['X', 'm', 'r', '6169', 'C', 'y', '9085', 'P', 'q', '9973', '4049', '5161', '9735', 'm', '5623', 'C', 'k', '1347', 'P', '1257', 'V', '9429', 'O', '153', '2621', '4167', '2375', '2673']

24, 13, 18, 6169, 3, 25, 9085, 16, 17, 9973, 4049, 5161, 9735, 13, 5623, 3, 11, 1347, 16, 1257, 22, 9429, 15, 153, 2621, 4167, 2375, 2673