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: ['3371', '2931', 'w', '481', '2349', 'j', '9965', 'y', 'i', '6207', 'U', 'Y', 'U', 'Q', 'q', 's', 'u', 'T', '7109', '1495', 'r', '7727']

3371, 2931, 23, 481, 2349, 10, 9965, 25, 9, 6207, 21, 25, 21, 17, 17, 19, 21, 20, 7109, 1495, 18, 7727