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: ['D', 'g', 'L', 'U', '2363', 'j', 'G', 'F', 'B', 'a', 'F', 'J', 'x', '2093', '6235']

4, 7, 12, 21, 2363, 10, 7, 6, 2, 1, 6, 10, 24, 2093, 6235