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: ['8491', 'V', 'w', '5597', 'F', '1821', '8101', '2345', 'J', 'Q', '1587', '3265', 'k', 'r', 'L', '1245', 'z', '6597', 'v', '9399', 'M', '7937', 'z', '5459', '1931', '5951', 'j', '7083', 'b', 'k', '8739', 'i', 's', 'e', '5845']

8491, 22, 23, 5597, 6, 1821, 8101, 2345, 10, 17, 1587, 3265, 11, 18, 12, 1245, 26, 6597, 22, 9399, 13, 7937, 26, 5459, 1931, 5951, 10, 7083, 2, 11, 8739, 9, 19, 5, 5845