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: ['9239', '3859', 'w', 'B', '8051', 'W', '667', 'W', '4377', '7669', 'I', 'M', 's', 'N', 'S', '6419', '3739', '1071', '5365', 'e', '1587', 'V', 'G', 'x', 'c', 'v']

9239, 3859, 23, 2, 8051, 23, 667, 23, 4377, 7669, 9, 13, 19, 14, 19, 6419, 3739, 1071, 5365, 5, 1587, 22, 7, 24, 3, 22