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: ['4805', 'h', 'D', 'F', '8457', '9321', '4153', 'N', 'y', '1049', '7093', 'a', 'k', 'n', '5875', '4211', '8615', '1653', '1543', 's', 'j', '4655', '1117', 'x', 'C', 'l', '5247', '2277']

4805, 8, 4, 6, 8457, 9321, 4153, 14, 25, 1049, 7093, 1, 11, 14, 5875, 4211, 8615, 1653, 1543, 19, 10, 4655, 1117, 24, 3, 12, 5247, 2277