6	6
3.0	2.0	7.0	11.0	-8.0	1.0
5.0	-9.0	2.0	7.0	1.0	-2.0
4.0	2.0	-5.0	6.0	13.0	9.0
2.0	6.0	9.0	-3.0	-4.0	-1.0
7.0	7.0	-4.0	-5.0	-6.0	12.0
3.0	9.0	17.0	6.0	-11.0	4.0