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: ['4623', 'q', 'A', '337', '2631', 'm', '4435', 'm', '785', '7219', '677', 's', 'J', '4207', '5269', '2349', '2939', 'I', 'd', '3611', '2917', 'G', '9687', '1707', '2465', '2167', 'R', 'M', '7405', 'e', 'j']

4623, 17, 1, 337, 2631, 13, 4435, 13, 785, 7219, 677, 19, 10, 4207, 5269, 2349, 2939, 9, 4, 3611, 2917, 7, 9687, 1707, 2465, 2167, 18, 13, 7405, 5, 10