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', '8039', 'm', 's', '5945', '9889', 'D', 'H', 'P', 'O', '7643', 'I', '1015', 'A', 'n', '127', 'y', 'J', 'i', '4561', 'i', '7445', 'L', 'l']

4, 8039, 13, 19, 5945, 9889, 4, 8, 16, 15, 7643, 9, 1015, 1, 14, 127, 25, 10, 9, 4561, 9, 7445, 12, 12