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: ['5085', '8005', 'B', 'Y', '3657', '9881', '6443', '2059', 'q', 'm', '1491', 'N', '4651', '637', '351', 'P', '9137', '8191', '8865', '8391']

5085, 8005, 2, 25, 3657, 9881, 6443, 2059, 17, 13, 1491, 14, 4651, 637, 351, 16, 9137, 8191, 8865, 8391