8
0 0
1 0
2 0
3 0
0 1
1 1
2 1
3 1
6
3 1 2 6
3 1 6 5
3 2 3 7
3 2 7 6
3 3 4 8
3 3 8 7
2
1 1 1
5 1 1
1
8 0.0 -0.5
