notes/school/di-ma/uebung/07/07_2_2.dot

graph {
    node [ shape="circle" ]
    {
        rank=same;
        1; 2;
    }
    {
        rank=same;
        3;
    }
    {
        rank=same;
        4; 5;
    }
    1 -- 2 -- 3 -- 1;
    3 -- 4 -- 5 -- 3;
}