GRAPH (#nodes #edges id uu vv ww xx yy zz):
10 22 geo(0,{10,10,3,0.200,0.000,0.000}) 10 

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

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