| 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 8, and the edges are: (7,3) (7,1) (1,2) (8,3) (0,1) (3,4) (2,0) (0,5) (6,1) (0,7) (4,6) (8,7) (3,2) (6,2) (4,8) (1,5) (7,6) (6,3). |