>>writegraph3d planar <<
1 0 0 0 11 3 4 5
2 0 0 0 11 5 6
3 0 0 0 10 1 7
4 0 0 0 1 10 9 5
5 0 0 0 1 4 12 2
6 0 0 0 2 12 8 7
7 0 0 0 11 6 8 3
8 0 0 0 10 7 6 9
9 0 0 0 12 4 8
10 0 0 0 3 8 4
11 0 0 0 2 7 1
12 0 0 0 9 6 5
0
