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: ['d', '4053', '3565', '9287', 't', '2167', 'a', 'w', 'n', 'x', '6075', '5265', '9647', 'p', '4957', 'd', '5321', '4491', 'l', '8053', '4859', '1685', '1137', 'N']

4, 4053, 3565, 9287, 20, 2167, 1, 23, 14, 24, 6075, 5265, 9647, 16, 4957, 4, 5321, 4491, 12, 8053, 4859, 1685, 1137, 14