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: ['J', 'i', '2631', 'N', 'N', 'D', 'i', '1115', 'Q', '4919', 'n', 'h', '7951', 'c', '1109', '1145', 'X', 'O', 'r', 'F', '3047', '3301', 'C']

10, 9, 2631, 14, 14, 4, 9, 1115, 17, 4919, 14, 8, 7951, 3, 1109, 1145, 24, 15, 18, 6, 3047, 3301, 3