0	0
1	0
2	0
3	0
2	1
1	1
2	2
1	2
0	1
0	2
0	3
-1	2
-1	1
-2	2
-2	1
-1	0
-2	0
-3	0
-2	-1
-1	-1
-2	-2
-1	-2
0	-1
0	-2
0	-3
1	-2
1	-1
2	-2
2	-1
