| In a undirected graph, the nodes are numbered from 0 to 6, and the edges are: | |
| an edge between node 6 and node 0 with weight 4, | |
| an edge between node 0 and node 4 with weight 4, | |
| an edge between node 1 and node 4 with weight 4, | |
| an edge between node 2 and node 1 with weight 2, | |
| an edge between node 4 and node 2 with weight 2, | |
| an edge between node 5 and node 2 with weight 2, | |
| an edge between node 6 and node 3 with weight 3, | |
| an edge between node 4 and node 3 with weight 3, | |
| an edge between node 5 and node 3 with weight 2. |