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: ['N', '4899', 'v', '8611', '2967', 'C', 'X', 'q', 'N', 'X', 'L', 'y', '2053', 'k', '3889', 'y', '6629', '8779', 'o', 'D', '2419', '1201', '9639', '9715', 'M', '4695', '6767', '2567']

14, 4899, 22, 8611, 2967, 3, 24, 17, 14, 24, 12, 25, 2053, 11, 3889, 25, 6629, 8779, 15, 4, 2419, 1201, 9639, 9715, 13, 4695, 6767, 2567