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: ['9447', 'L', 'K', 'B', '4801', '2917', 'x', 'b', '5123', '8729', 'y', 'w', '1707', 'g', '1581', '603', 'z', '6871', 'A', '8583', 'P', 'O', 'P', 'r', '4857', '9127', 'H', '3233', 'g', '8617']

9447, 12, 11, 2, 4801, 2917, 24, 2, 5123, 8729, 25, 23, 1707, 7, 1581, 603, 26, 6871, 1, 8583, 16, 15, 16, 18, 4857, 9127, 8, 3233, 7, 8617