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: ['4077', '8811', '1035', 'v', 'y', 'S', '6003', 'p', 'u', 'K', 'J', 'U', 'u', '1325', '3319', '9513', 'o', 'e', '5691', 'n', '6159', '5307', 'M', 'i', 'u', '5059', 'U', '407', '549', 'r', '2733', 'i']

4077, 8811, 1035, 22, 25, 19, 6003, 16, 21, 11, 10, 21, 21, 1325, 3319, 9513, 15, 5, 5691, 14, 6159, 5307, 13, 9, 21, 5059, 21, 407, 549, 18, 2733, 9