\begin{tikzpicture}[baseline=-0.25em,scale=0.25]
	\begin{pgfonlayer}{nodelayer}
		\node [style=none] (0) at (3, -8) {};
		\node [style=none] (1) at (-1, -8) {};
		\node [style=none] (2) at (-1, -4) {};
		\node [style=none] (3) at (3, -4) {};
		\node [style=none] (4) at (3, 0) {};
		\node [style=none] (5) at (-1, 0) {};
		\node [style=none] (6) at (8, 3) {};
		\node [style=none] (7) at (8, 7) {};
		\node [style=none] (8) at (8, 11) {};
		\node [style=none] (9) at (12, 11) {};
		\node [style=none] (10) at (12, 7) {};
		\node [style=none] (11) at (12, 3) {};
		\node [style=none] (12) at (5, 1.25) {$\cdot$};
		\node [style=none] (13) at (5.5, 1.5) {$\cdot$};
		\node [style=none] (14) at (6, 1.75) {$\cdot$};
		\node [style=0.8] (15) at (1, -8.5) {$e_1$};
		\node [style=0.8] (16) at (4.25, -6) {$\lambda_{c_1,v}$};
		\node [style=0.8] (17) at (-1.5, -6) {$e_0$};
		\node [style=0.8] (18) at (1, -6) {$x_{i_1}$};
		\node [style=0.8] (20) at (1, -2) {$x_{i_2}$};
		\node [style=0.8] (21) at (9.75, 5) {$x_{i_d-1}$};
		\node [style=0.8] (22) at (10.25, 9) {$x_{i_d}$};
		\node [scale=0.75] (23) at (13.25, 9) {$e_{N+1}$};
		\node [style=0.8] (24) at (10, 11.5) {$e_N$};
		\node [scale=0.7] (25) at (0.5, -3.25) {$\lambda_{c_0,v}$};
		\node [style=none] (26) at (9.5, 5.5) {};
		\node [style=none] (27) at (10.25, 4.75) {};
		\node [style=none] (28) at (9.5, 9.5) {};
		\node [style=none] (29) at (10.5, 8.5) {};
		\node [style=none] (30) at (0.5, -1.5) {};
		\node [style=none] (31) at (1.5, -2.5) {};
		\node [style=none] (32) at (0.5, -5.5) {};
		\node [style=none] (33) at (1.5, -6.5) {};
	\end{pgfonlayer}
	\begin{pgfonlayer}{edgelayer}
		\draw (11.center) to (6.center);
		\draw (6.center) to (7.center);
		\draw (7.center) to (8.center);
		\draw (8.center) to (9.center);
		\draw (9.center) to (10.center);
		\draw (11.center) to (10.center);
		\draw (10.center) to (7.center);
		\draw (0.center) to (3.center);
		\draw (0.center) to (1.center);
		\draw (1.center) to (2.center);
		\draw (2.center) to (5.center);
		\draw (5.center) to (4.center);
		\draw (4.center) to (3.center);
		\draw (2.center) to (3.center);
		\draw [style=extend-edge] (7.center) to (26.center);
		\draw [style=extend-edge] (27.center) to (11.center);
		\draw [style=extend-edge] (8.center) to (28.center);
		\draw [style=extend-edge] (29.center) to (10.center);
		\draw [style=extend-edge] (2.center) to (32.center);
		\draw [style=extend-edge] (33.center) to (0.center);
		\draw [style=extend-edge] (5.center) to (30.center);
		\draw [style=extend-edge] (31.center) to (3.center);
	\end{pgfonlayer}
\end{tikzpicture}
