data/cycle/graph_description/medium/graph1020.txt

In an undirected graph, (i,j) means that node i and node j are connected with an undirected edge.
The nodes are numbered from 0 to 12, and the edges are: (4,0) (11,4) (2,1) (9,8) (7,8) (1,0) (3,0) (11,8) (5,6) (3,6) (2,0) (6,2) (10,1) (12,3).