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: ['v', '8517', 'y', 'g', 'S', 'U', 'I', '5931', '4977', '2963', 'z', 'b', 'J', 'C', 'B', 'V', 'i', 'j', '8673', 'q', 'u', 'U', '9145', '5243', '8147', 'M', '5167', '9479']

22, 8517, 25, 7, 19, 21, 9, 5931, 4977, 2963, 26, 2, 10, 3, 2, 22, 9, 10, 8673, 17, 21, 21, 9145, 5243, 8147, 13, 5167, 9479