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: ['8885', 'E', 'N', 'L', 'v', 'G', '9483', '4251', 'a', '251', '4985', '8759', '9057', 'S', 'T', '8617', 'J', '8375', '8707', 'g', '7837', 'D']

8885, 5, 14, 12, 22, 7, 9483, 4251, 1, 251, 4985, 8759, 9057, 19, 20, 8617, 10, 8375, 8707, 7, 7837, 4