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

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




    "dengyu2008@hotmail.com" -- "v-denyu@microsoft.com" [label=" 7 ", penwidth="7", color="#00688bC9"];
    "dengyu2008@hotmail.com" -- "pascal.sielski@gmx.de" [label=" 2 ", penwidth="2", color="#00688b70"];
    "v-denyu@microsoft.com" -- "pascal.sielski@gmx.de" [label=" 2 ", penwidth="2", color="#00688b70"];
    "dengyu2008@hotmail.com" -- "yangjiaolong@users.noreply.github.com" [label=" 1 ", penwidth="1", color="#00688b5E"];
    "dengyu2008@hotmail.com" -- "dengy13@mails.tsinghua.edu.cn" [label=" 1 ", penwidth="1", color="#00688b5E"];
    "dengyu2008@hotmail.com" -- "vozman@yandex.ru" [label=" 1 ", penwidth="1", color="#00688b5E"];
    "dengyu2008@hotmail.com" -- "abhayadhathri.arige@gmail.com" [label=" 1 ", penwidth="1", color="#00688b5E"];
    "v-denyu@microsoft.com" -- "dengy13@mails.tsinghua.edu.cn" [label=" 1 ", penwidth="1", color="#00688b5E"];
    "v-denyu@microsoft.com" -- "vozman@yandex.ru" [label=" 1 ", penwidth="1", color="#00688b5E"];
    "v-denyu@microsoft.com" -- "abhayadhathri.arige@gmail.com" [label=" 1 ", penwidth="1", color="#00688b5E"];
    "pascal.sielski@gmx.de" -- "dengy13@mails.tsinghua.edu.cn" [label=" 1 ", penwidth="1", color="#00688b5E"];
    "pascal.sielski@gmx.de" -- "vozman@yandex.ru" [label=" 1 ", penwidth="1", color="#00688b5E"];
    "pascal.sielski@gmx.de" -- "abhayadhathri.arige@gmail.com" [label=" 1 ", penwidth="1", color="#00688b5E"];
    "dengy13@mails.tsinghua.edu.cn" -- "vozman@yandex.ru" [label=" 1 ", penwidth="1", color="#00688b5E"];
    "dengy13@mails.tsinghua.edu.cn" -- "abhayadhathri.arige@gmail.com" [label=" 1 ", penwidth="1", color="#00688b5E"];
    "vozman@yandex.ru" -- "abhayadhathri.arige@gmail.com" [label=" 1 ", penwidth="1", color="#00688b5E"];

}