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: ['L', 'O', 'E', '2771', 'c', 'l', 'N', 'Y', '9125', '4557', '8231', '1209', '9265', 'Y']

12, 15, 5, 2771, 3, 12, 14, 25, 9125, 4557, 8231, 1209, 9265, 25