notes/school/di-ma/20181031_1-k5.dot

graph k5 {
    node [ shape="point" ];

    {
        rank="same";
        1;
        2;
    }

    {
        rank="same";
        3;
        5;
    }

    1 -- 2 -- 3 -- 4 -- 5 -- 1 -- 3 -- 5 -- 2 -- 4 -- 1;
}