T???C@?GC_H?@_KC@g@E@_[@S@_dOdGS?IUG
            IpD?GUbV?
    is a subgraph of this graph.  It is not embeddable.  Hence, this
    graph is not embeddable either.  One possible monomorphism
    of the unembeddable graph into this one, is given by: