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: ['3965', '769', '4003', 'g', 'x', '4051', '5211', 'a', 'k', 'L', '3631', '3517', '1385', 'N', '8023', '9377', '4185', '8011', 'e', '2783', '5117', '1549', 'I', '5195', 'G', '7305', 'o', '5653', '9609', '8113', 'i', '8789', '7213']

3965, 769, 4003, 7, 24, 4051, 5211, 1, 11, 12, 3631, 3517, 1385, 14, 8023, 9377, 4185, 8011, 5, 2783, 5117, 1549, 9, 5195, 7, 7305, 15, 5653, 9609, 8113, 9, 8789, 7213