| 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 17, and the edges are: (0,17) (1,14) (1,8) (3,14) (4,10) (5,17) (6,15) (7,14) (8,12) (8,15) (9,17) (9,10) (9,16) (12,15) (13,17) (14,15). |