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