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: ['9659', 'y', '4029', '3505', '7891', 'k', 'd', 'q', 'x', 'N', '4157', '2373', '8125', '8537', '9175']

9659, 25, 4029, 3505, 7891, 11, 4, 17, 24, 14, 4157, 2373, 8125, 8537, 9175