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: ['23', '663', '659', 'g', 'p', '4429', '2269', 'A', '1807', 'V', '3939', '6699', '2963', 'w', 'C']

23, 663, 659, 7, 16, 4429, 2269, 1, 1807, 22, 3939, 6699, 2963, 23, 3