K+R-1K+R-3K+R-4K+R-5K+R-2K+R-9K+R-6K+R-10K+R-8K+R-7K+R-11K+R-12K+R-13K+R-14K+R-15K+R-16K+R-17K+R-18K+R-20K+R-21