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: ['225', 'D', '8103', 'l', '1017', 's', 'E', 'n', 'X', '8281', '3389', '9697', 's', 'V', '929', 'y', '4743', 'g', 'K', 'S']

225, 4, 8103, 12, 1017, 19, 5, 14, 24, 8281, 3389, 9697, 19, 22, 929, 25, 4743, 7, 11, 19