The graph T???C@?GC_B?oA@WPW@AaLA@AQ?dI?WgHg_g
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: