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: ['z', '9587', 'h', 'q', '7721', '2029', '857', '7279', '8053', '2573', 'V', '7067', 'A', 'R', '5721', '7465', '8929', '1587', 'c', 'Q', 'W', '1019', '2793', 'G', 'o', 'e', '915', '7767', '2085', 'N', 'g', '6833', '7903', 'c', '5331', '5713']

26, 9587, 8, 17, 7721, 2029, 857, 7279, 8053, 2573, 22, 7067, 1, 18, 5721, 7465, 8929, 1587, 3, 17, 23, 1019, 2793, 7, 15, 5, 915, 7767, 2085, 14, 7, 6833, 7903, 3, 5331, 5713