graph G {
    compound="true"
    rankdir="TB"
    bgcolor="white"
    fontname="Tahoma"

    node [
        fixedsize="false"
        fontname="Tahoma"
        color="white"
        fillcolor="deepskyblue2"
        fontcolor="black"
        shape="box"
        style="filled"
        penwidth="1.0"
    ]
    edge [
        fontname="Arial"
        color="#00688b"
        fontcolor="black"
        fontsize="12"
        arrowsize="0.5"
        penwidth="1.0"
    ]




    "spark" -- "spark" [label=" 36 ", penwidth="10", color="#a0a0a0FF"];
    "native" -- "native" [label=" 34 ", penwidth="9", color="#a0a0a0ED"];
    "spark" -- "native" [label=" 20 ", penwidth="5", color="#00688bA5"];
    "spark" -- "common" [label=" 20 ", penwidth="5", color="#00688bA5"];
    "native" -- "common" [label=" 12 ", penwidth="3", color="#00688b82"];
    "common" -- "common" [label=" 9 ", penwidth="2", color="#a0a0a070"];
    "ROOT" -- "native" [label=" 1 ", penwidth="1", color="#00688b4C"];

}