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: ['v', 'k', 'y', 'X', 'y', 'e', 'D', '1903', '2651', '1101', '9813', '5433', '6553', '8533', 'N', 'D', '8359']

22, 11, 25, 24, 25, 5, 4, 1903, 2651, 1101, 9813, 5433, 6553, 8533, 14, 4, 8359