graph G {
	graph [_draw_="c 9 -#fffffe00 C 7 -#ffffff P 4 0 0 0 36 54 36 54 0 ",
		bb="0,0,54,36",
		xdotversion=1.7
	];
	node [label="\N"];
	a	[_draw_="c 7 -#000000 p 4 33 24 33 12 21 12 21 24 c 7 -#000000 L 5 36 27 36 9 18 9 18 27 36 27 c 7 -#000000 L 2 36 18 54 18 c 7 -#000000 \
L 2 0 18 18 18 ",
		height=0.5,
		label="",
		pos="27,18",
		shape=insulator,
		width=0.75];
}