graph code1

digraph G {
    node [label="\N"];
    graph [bb="0,0,1927.1,910"];
    1;
    4;
    8;
    6;
    7;
    14;
    12;
    10;
    13;
    16;
    2;
    11;
    15;
    1 -> 4;
    4 -> 8;
    8 -> 6;
    6 -> 7;
    7 -> 14;
    14 -> 12;
    12 -> 10;
    10 -> 13;
    13 -> 16;
    16 -> 2;
    12 -> 11;
    11 -> 13;
    14 -> 15;
    15 -> 14;
    7 -> 13;
    6 -> 13;
}