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: ['x', 'p', '5677', 'i', 'B', '3785', '6881']

24, 16, 5677, 9, 2, 3785, 6881