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: ['K', '7685', '2439', 'f', '3807', 'p', '5167', '7219', 'X', 'Q', 'M', '1931', '7737', '633', 'r', '5013', '8975', 't', 'g', '2455', 'B', 'F', 'Q', 'U', '5821', 'Z', 'Z', '7585', 'e', 'S', 'P', '3209', 'K', 'A', '187', 'E', '3923']

11, 7685, 2439, 6, 3807, 16, 5167, 7219, 24, 17, 13, 1931, 7737, 633, 18, 5013, 8975, 20, 7, 2455, 2, 6, 17, 21, 5821, 26, 26, 7585, 5, 19, 16, 3209, 11, 1, 187, 5, 3923