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: ['n', 'k', 'k', 'C', '3595', 'k', 'e', 'h', 'R', '8205', '4399', 'H', 'L', '2755', '5093']

14, 11, 11, 3, 3595, 11, 5, 8, 18, 8205, 4399, 8, 12, 2755, 5093