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', 'G', 'V', '8789', '9883', '9231', 'L', 'Z', '2257', 'k', 'S', 'x', '3299', '5279', '6363', '6897', 'c']

16, 7, 22, 8789, 9883, 9231, 12, 26, 2257, 11, 19, 24, 3299, 5279, 6363, 6897, 3