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: ['239', 'G', '1613', 'z', '7877', '6367', 'V', '777', '4565', 'y', 'Z', 'k', 'q', 'Z', 'N', 'I', '3555', 'C', 'Z', '4445', '6039', '781', 'x']

239, 7, 1613, 26, 7877, 6367, 22, 777, 4565, 25, 26, 11, 17, 26, 14, 9, 3555, 3, 26, 4445, 6039, 781, 24