| 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: (7,8) (3,2) (5,6) (7,5) (4,0) (4,3) (1,5) (2,0) (6,0) (7,4) (7,0) (4,6) (1,0) (6,2) (5,2) (7,3) (6,8). |