T????A?WA_@_A__KS_?k@Gg_BPPogEQD?DkG
            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: