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: ['n', 'D', 'e', '5297', 's', '9641', '3987', '3701', '2335', 'j', '9417', '3365', 'A']

14, 4, 5, 5297, 19, 9641, 3987, 3701, 2335, 10, 9417, 3365, 1