graph G {
	size="4,4";
        node [shape=box,style=filled];
        {node [width=.3,height=.3,shape=octagon,style=filled,color=skyblue] A1 A2 A3}
        A -- A1 [label="l #6"];
        A -- A2 [label="l #7"];
        A -- A3 [label="l #8"];

        {edge [style=invis]; A1 -- A2 -- A3}

        edge [len=3];   /* applies to all following edges */
        A -- B [label="l #1"]; A -- C [label="l #2"]; A -- D [label="l #3"];
        A -- E [label="l #4"]; A -- F [label="l #5"]; B -- C [label="l #1"];
        B -- E [label="l #2"]; B -- F [label="l #3"]; C -- D [label="l #1"];
        D -- E [label="l #1"];
}

