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: ['y', 'Q', 'J', 'B', 'Q', '8027', 'c', '1103', '4067', 'O', 'U', 'H', '2857', '9907', '651', '959', 's', 'R', 'G', 't', '4077', 'D', '4259', 'y', '9409', '4423']

25, 17, 10, 2, 17, 8027, 3, 1103, 4067, 15, 21, 8, 2857, 9907, 651, 959, 19, 18, 7, 20, 4077, 4, 4259, 25, 9409, 4423