| 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 12, and the edges are: (2,0) (1,0) (7,3) (8,0) (5,10) (4,0) (12,11) (3,6) (3,0) (9,8) (3,4) (10,12) (2,12) (1,11) (9,6). |