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: ['6745', 'w', 'm', 'V', 'B', 'D', '7141', '8687', 'F', '5017', 'a', '317', 'H', '1391', '6469', 'd', 'z', '9773', '8805', '9889', '8183', 'J', '9885', '3665', '3861', '1259', 'V', 'A', '6983', '6103', 'T', '549', '5805', '1849', '7109', '4465', '1051', 'J', 'G', '8517']

6745, 23, 13, 22, 2, 4, 7141, 8687, 6, 5017, 1, 317, 8, 1391, 6469, 4, 26, 9773, 8805, 9889, 8183, 10, 9885, 3665, 3861, 1259, 22, 1, 6983, 6103, 20, 549, 5805, 1849, 7109, 4465, 1051, 10, 7, 8517