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: ['5767', '9373', '5455', '6805', 'b', 'n', 'B', '6561', '8265', '7781', '6743', 'R', 'U', '7749', 'K', '193', '4771', '5377', 'Q', '4617', '7495', 'T', 'y', 'k', '2869', '2475', '9159', 'P', 'H', 'z', '7633', 'Q', '7813', '8989', 'T', '5063', 'v', 'J']

5767, 9373, 5455, 6805, 2, 14, 2, 6561, 8265, 7781, 6743, 18, 21, 7749, 11, 193, 4771, 5377, 17, 4617, 7495, 20, 25, 11, 2869, 2475, 9159, 16, 8, 26, 7633, 17, 7813, 8989, 20, 5063, 22, 10