graph: {title: "computer network"
        layoutalgorithm: forcedir
        node.iconfile   : "computer.png"
        node.label      : " "
        node.borderwidth: 0
        edge.arrowsize  : 0
node: {title: "a"}  node: {title: "b"}
node: {title: "c"}  node: {title: "d"}
node: {title: "e"}  node: {title: "f"}
node: {title: "g"}  node: {title: "h"}
node: {title: "i"}  node: {title: "j"}
node: {title: "k"}  node: {title: "l"}
node: {title: "m"}  node: {title: "n"}
node: {title: "o"} // aiSee Graph Visualization
                   //   http://www.aisee.com   
edge: {source: "b"  target: "a"}
edge: {source: "c"  target: "d"}
edge: {source: "d"  target: "j"}
edge: {source: "e"  target: "h"}
edge: {source: "f"  target: "g"}
edge: {source: "g"  target: "e"}
edge: {source: "h"  target: "c"}
edge: {source: "i"  target: "n"}
edge: {source: "i"  target: "h"}
edge: {source: "i"  target: "d"}
edge: {source: "j"  target: "a"}
edge: {source: "k"  target: "i"}
edge: {source: "k"  target: "l"}
edge: {source: "k"  target: "m"}
edge: {source: "k"  target: "n"}
edge: {source: "k"  target: "o"}
edge: {source: "l"  target: "f"}
edge: {source: "l"  target: "m"}
edge: {source: "m"  target: "g"}
edge: {source: "m"  target: "e"}
edge: {source: "m"  target: "i"}
edge: {source: "n"  target: "j"}
edge: {source: "n"  target: "a"}
edge: {source: "n"  target: "o"}
edge: {source: "o"  target: "b"}

}