Figure 8

Visiting blocks are not distinguishable in the structure of A-Bruijn graphs and in the structure of Enredo graphs. In this example, only the colors of adjacency edges reflect a difference between the substructure at the top (visiting block) and at the bottom (no visiting block). We consider colors as edge labels, which are not present in the graph structures. Thus, visiting blocks do not form unique substructures in the structures of A-Bruijn and Enredo graphs.