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: ['449', '4045', 'r', '4185', 'w', '7613', '5239', 'Z', 'e', '6387', '3803', '1107', 'x', 'D', '1317', 'm', '8347', 'N', 'T', '8985', 'U', '497', '3753', '4415', '1245', 'O', '5017', '9531', '281', '9319', '669', '7927', 'V', 'k', '3045', 'H']

449, 4045, 18, 4185, 23, 7613, 5239, 26, 5, 6387, 3803, 1107, 24, 4, 1317, 13, 8347, 14, 20, 8985, 21, 497, 3753, 4415, 1245, 15, 5017, 9531, 281, 9319, 669, 7927, 22, 11, 3045, 8