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: ['K', '905', 'X', '2427', '9027', 'o', 'C', 't', '8601', 'z', 'L', '3333', '9363']

11, 905, 24, 2427, 9027, 15, 3, 20, 8601, 26, 12, 3333, 9363