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		\node [style=black node] (7) at (8, 0) {};
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	\begin{pgfonlayer}{edgelayer}
		\draw (2) to (1);
		\draw (1) to (0);
		\draw (0) to (4);
		\draw (4) to (5);
		\draw (5) to (6);
		\draw (6) to (7);
		\draw (7) to (8);
		\draw (3) to (0);
		\draw [style=double edge] (8) to (9);
	\end{pgfonlayer}
\end{tikzpicture}