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', '4579', '4295', 'Z', '7161', 't', 'G', 'n', 'l', 'w', '6297', '8339', '6579', 'q', 'F', '2199', '3181', 'G', 'q', 'x']

10, 4579, 4295, 26, 7161, 20, 7, 14, 12, 23, 6297, 8339, 6579, 17, 6, 2199, 3181, 7, 17, 24