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: ['Y', 'q', '7483', '7955', 't', 'm', '4693', '7265', 'S', '5997', 'g', '5109', '6243', 'V', 'J', '9641', 'x', 'u', 's', 'N']

25, 17, 7483, 7955, 20, 13, 4693, 7265, 19, 5997, 7, 5109, 6243, 22, 10, 9641, 24, 21, 19, 14