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: ['g', '6557', 'a', '7701', '5787', 'd', '7295', 'd', '5483', 'J', '8769', 'j', '3043', '6209', '4409', '1469', 't', 's', 's', 'N', 'U', '1477', 's', '2265', '6407', '6167', '6857', '1497', '1447', 'g', 'z', 'G', 'O', '7585', 'L', '5599', '2869', '2127', 'F']

7, 6557, 1, 7701, 5787, 4, 7295, 4, 5483, 10, 8769, 10, 3043, 6209, 4409, 1469, 20, 19, 19, 14, 21, 1477, 19, 2265, 6407, 6167, 6857, 1497, 1447, 7, 26, 7, 15, 7585, 12, 5599, 2869, 2127, 6