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: ['D', 'J', '2981', '7597', '2015', '9277', 'k', '3975', 'j', '933', 'T', 'p', 'w', 'z', '477', '7027', 'v', '1691', '3451', 'o', '3807', 'y', '5275', '8483', 'u', 'p', '5005', 'Q', '8743', '1169', 'B', 'p']

4, 10, 2981, 7597, 2015, 9277, 11, 3975, 10, 933, 20, 16, 23, 26, 477, 7027, 22, 1691, 3451, 15, 3807, 25, 5275, 8483, 21, 16, 5005, 17, 8743, 1169, 2, 16