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: ['x', '4735', '1075', '8347', 'L', 'd', '4567', 'Q', 'j', 'j', 'a', '1777', 'S', '4575', '4839', 's', 'X', '7193', '727', '6907', 'a', 'k', '6101', '3907', '7719', '6713', '1379', '8561', 'E', 'W', 'C', '3361', '8197', 'H', 'R', 'u', '9959', '8269', 'b', 'x']

24, 4735, 1075, 8347, 12, 4, 4567, 17, 10, 10, 1, 1777, 19, 4575, 4839, 19, 24, 7193, 727, 6907, 1, 11, 6101, 3907, 7719, 6713, 1379, 8561, 5, 23, 3, 3361, 8197, 8, 18, 21, 9959, 8269, 2, 24