>>writegraph3d planar <<
1 0 0 0 2 3 7 4
2 0 0 0 1 5 8 3
3 0 0 0 1 2 9 6
4 0 0 0 1 7 10 5
5 0 0 0 2 4 8
6 0 0 0 3 9 10 7
7 0 0 0 1 6 4
8 0 0 0 5 10 9 2
9 0 0 0 3 8 6
10 0 0 0 4 6 8
0
