Task: Program Execution
Input (English): 21, 23, ['E', '6691', '6833', 'q', '1789', '1691', 'q', '3143', '7343', '4861', '5685', '2787', 'w', '1477', '6041', '7059', 'M', 'b', '2875', '4985', '2313', 'L', '9421', 'r', '9867']
Output (English): 2313, L, 9421