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: ['E', 't', '6029', '6263', '2831', '4399', '3291', 'w', '7279', '9117', 'D', 'm', 'y', '5477', 'G', '321', 'k', '9275', 'V', '6013', 'D', '819', '241', '1647', 'c', 'J', 'E', 'h']

5, 20, 6029, 6263, 2831, 4399, 3291, 23, 7279, 9117, 4, 13, 25, 5477, 7, 321, 11, 9275, 22, 6013, 4, 819, 241, 1647, 3, 10, 5, 8