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: ['W', '7207', 'l', 'X', '6315', 'j', '8655', '7077', 'F', '5455', 'A', 'P', '9725', '4485', 'P', '8437', '8611', '7141', 'G', '167', 'W', 'S', '2935', 'W', '3673', 'b', '1119', '777', '8383', 'b', 'u', '8545', 'H', 'c', '3269', '5755', 'k', 'i', '2685', 'p']

23, 7207, 12, 24, 6315, 10, 8655, 7077, 6, 5455, 1, 16, 9725, 4485, 16, 8437, 8611, 7141, 7, 167, 23, 19, 2935, 23, 3673, 2, 1119, 777, 8383, 2, 21, 8545, 8, 3, 3269, 5755, 11, 9, 2685, 16