8 18 1
0 -1.63299 -2
-1.63299 0 -2
0 1.63299 -2
1.63299 0 -2
0 -1.63299 2
-1.63299 0 2
0 1.63299 2
1.63299 0 2
3 1
2 1
6 1
2 6
2 7
3 2
3 7
3 8
4 3
4 8
5 1
4 5
1 4
6 5
7 6
5 8
7 5
8 7
4 2 3