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: ['4569', '8461', '515', 'n', '3525', '2165', '4283', '679', 'Y']

4569, 8461, 515, 14, 3525, 2165, 4283, 679, 25