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: ['3749', '333', '1825', '2253', '1493', '3497', '4311', 'c', 'n', 'E', '8207', '369', '5793', 'F', '3777', 'D', '1095', 't', '6279', 'X', 'a', 'k', 'r', 'G', '1745', 'c', '9537']

3749, 333, 1825, 2253, 1493, 3497, 4311, 3, 14, 5, 8207, 369, 5793, 6, 3777, 4, 1095, 20, 6279, 24, 1, 11, 18, 7, 1745, 3, 9537