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"
    ]

    "java (10)" [fillcolor="deepskyblue2"];
    "xml (7)" [fillcolor="deepskyblue2"];
    "sql (2)" [fillcolor="deepskyblue2"];
    "yaml (1)" [fillcolor="deepskyblue2"];
    "js (1)" [fillcolor="deepskyblue2"];
    "scala (8)" [fillcolor="deepskyblue2"];



    "java (10)" -- "scala (8)" [label=" 7 ", penwidth="7", color="#00688bC9"];
    "scala (8)" -- "xml (7)" [label=" 6 ", penwidth="6", color="#00688bB7"];
    "java (10)" -- "xml (7)" [label=" 5 ", penwidth="5", color="#00688bA5"];
    "java (10)" -- "sql (2)" [label=" 2 ", penwidth="2", color="#00688b70"];
    "scala (8)" -- "sql (2)" [label=" 2 ", penwidth="2", color="#00688b70"];
    "xml (7)" -- "sql (2)" [label=" 2 ", penwidth="2", color="#00688b70"];
    "java (10)" -- "js (1)" [label=" 1 ", penwidth="1", color="#00688b5E"];
    "scala (8)" -- "js (1)" [label=" 1 ", penwidth="1", color="#00688b5E"];
    "xml (7)" -- "js (1)" [label=" 1 ", penwidth="1", color="#00688b5E"];
    "sql (2)" -- "js (1)" [label=" 1 ", penwidth="1", color="#00688b5E"];
    "java (10)" -- "yaml (1)" [label=" 1 ", penwidth="1", color="#00688b5E"];
    "scala (8)" -- "yaml (1)" [label=" 1 ", penwidth="1", color="#00688b5E"];
    "xml (7)" -- "yaml (1)" [label=" 1 ", penwidth="1", color="#00688b5E"];

}