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