GRAPH (#nodes #edges id uu vv ww xx yy zz):
10 28 geo(0,{10,10,3,0.200,0.000,0.000}) 10 

VERTICES (index name u v w x y z):
0 0 3 4 
1 1 8 6 
2 2 7 6 
3 3 6 0 
4 4 8 1 
5 5 0 3 
6 6 4 0 
7 7 3 6 
8 8 1 5 
9 9 7 2 

EDGES (from-node to-node length a b):
0 9 4 0 
0 4 6 0 
0 2 4 0 
1 8 7 0 
2 6 7 0 
3 9 2 0 
3 8 7 0 
3 5 7 0 
4 7 7 0 
4 6 4 0 
5 9 7 0 
5 7 4 0 
7 9 6 0 
8 9 7 0