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