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	\begin{pgfonlayer}{nodelayer}
		\node [style=Medium dot] (1) at (2, 3) {};
		\node [style=Medium dot] (2) at (-2, -3) {};
		\node [style=none] (3) at (4, 7) {};
		\node [style=none] (4) at (-4, -5) {};
		\node [style=none] (5) at (2, -5) {};
		\node [style=none] (6) at (8, 3) {};
		\node [style=Medium dot] (7) at (-7, -1) {};
		\node [style=none] (8) at (-7, 5.25) {};
		\node [style=Medium dot] (9) at (0, 6) {};
		\node [style=none] (10) at (2.25, 3.25) {$V_i$};
		\node [style=none] (11) at (0.5, 6.5) {$V_{i-1}$};
		\node [style=none] (12) at (-2, -3.75) {$V_{i+1}$};
		\node [style=none] (13) at (-7.5, -1.5) {$V_{i+2}$};
		\node [style=none] (14) at (3.25, 5.25) {$e_j$};
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	\begin{pgfonlayer}{edgelayer}
		\draw [style=Very thick] (2) to (1);
		\draw [style=Very thick] (4.center) to (3.center);
		\draw (3.center) to (6.center);
		\draw (6.center) to (5.center);
		\draw (5.center) to (4.center);
		\draw (8.center) to (9);
		\draw (9) to (1);
		\draw (2) to (7);
		\draw (7) to (8.center);
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