The graph T???C@?gA_D?D?`C?cO[Aog@HGPBH@coAWEG
Unembeddable subgraph
The graph
It?IQGiDO
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: