0	1	2
0	2	-1
1	1	1
1	2	4
2	1	1
2	2	-1
3	1	0
3	2	2
4	1	0
4	2	-1
5	1	0
5	2	-1
6	1	0
6	2	-1
7	1	0
7	2	-1
8	1	0
8	2	-1