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: ['V', 'u', 'V', '5665', '2201', '801', '3419', 'w', 'L', '1139', '5019', '9251', 'D', '7381', 'S', 'O', '6755', '8581', '9877', '7003', '8211', '55', 'i', 'o', 'X', 'D', 'K', 't', '731', '9407', '6813', '1697', 'r']

22, 21, 22, 5665, 2201, 801, 3419, 23, 12, 1139, 5019, 9251, 4, 7381, 19, 15, 6755, 8581, 9877, 7003, 8211, 55, 9, 15, 24, 4, 11, 20, 731, 9407, 6813, 1697, 18