15-6=10-2=14-8=12-5=15-8=10-5=14-9=11-6=12-8=13-4=10-1=12-3=13-6=16-7=10-4=14-8=13-6=10-1=14-6=14-5=12-8=12-4=11-9=12-7=16-9=12-4=...
