Task: Program Execution
Input (English): 4, ['6071', 'M', '8561', 'J', 'U', '8715', '727', 'K', '5677', '1533', 'F', 's', '4105', '4423', '7877', 'Z', '8291', '8411']
Output (English): 6071, U, 5677, 4105, 8291