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: ['P', '8671', '4383', '8767', 'G', 'F', '6381', 'j', 'W', '965', '431', 'd', 'q', 'W', 'S', 'D', '9141', '5669', 'x', '2653', '7009', '5365', '7249', '803']

16, 8671, 4383, 8767, 7, 6, 6381, 10, 23, 965, 431, 4, 17, 23, 19, 4, 9141, 5669, 24, 2653, 7009, 5365, 7249, 803