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: ['3365', '1243', 'i', 'W', '6137', 'J', '7977', '3869', 't', '3723', 'S', '9885', 'q', 'u', '9797', '4021', '3381', 'c', '8919', 'A', '2045']

3365, 1243, 9, 23, 6137, 10, 7977, 3869, 20, 3723, 19, 9885, 17, 21, 9797, 4021, 3381, 3, 8919, 1, 2045