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: ['S', 's', 'd', 'k', '3777', '4931', 'W', 'x', '3355', 'T', '5623', '5489', 'r', '8295', '4869', 'z', '7663', '2471', '549', '6183', 'H', 'x', 'w']

19, 19, 4, 11, 3777, 4931, 23, 24, 3355, 20, 5623, 5489, 18, 8295, 4869, 26, 7663, 2471, 549, 6183, 8, 24, 23