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', '8605', 'D', '5919', 'b', '407', '3271', 'u', 'F', 'g', 'S', 'm', 'K', 'G', 'v', '4563', '3259', '9031', 'O', '9217', 'p', '7525', '1365', 's', 'M']

11, 8605, 4, 5919, 2, 407, 3271, 21, 6, 7, 19, 13, 11, 7, 22, 4563, 3259, 9031, 15, 9217, 16, 7525, 1365, 19, 13