nop2`graph {
graph [pad="0.25,0.25"
bgcolor=white];
node [shape=point
width=0.2
fontname="Helvetica,Arial,sans-serif"
fontsize=40];
edge [penwidth = 3];
//O [ xlabel = <O>, pos="0,0", xlp="0,0"];
A [ xlabel = <A>, pos="200,-200", xlp="220,-220"];
B [ xlabel = <B>, pos="-20,-130", xlp="-40,-110"];
C [ xlabel = <C>, pos="-240,100", xlp="-270,110"];
D [ xlabel = <D>, pos="100,100", xlp="80,120"];
E [ xlabel = <E>, pos="280,200", xlp="310,200"];
F [ xlabel = <F>, pos="-200,-210", xlp="-230,-210"];
G [ xlabel = <G>, pos="20,250", xlp="20,280"];
A -- D;
A -- E;
A -- F;
B -- D;
B -- F;
C -- F;
C -- G;
D -- E;
E -- G;
}`