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: ['2135', 'a', '2093', '6159', '8167', '3689', '3963', '2143', 'A', 'T', '9671', 'k', '6151', '1761', 'z', 'r', 'd', '247', 'n', 'E', 'b', 'C', 'o', 'I', '4571', '547', 'M', '4117', 'P', 'B', '5585', 'j']

2135, 1, 2093, 6159, 8167, 3689, 3963, 2143, 1, 20, 9671, 11, 6151, 1761, 26, 18, 4, 247, 14, 5, 2, 3, 15, 9, 4571, 547, 13, 4117, 16, 2, 5585, 10