digraph G {
            0 -> 7;
            0 -> 5;
            1 -> 8;
            2 -> 4;
            3 -> 1;
            5 -> 7;
            6 -> 0;
            6 -> 1;
            6 -> 3;
            7 -> 5;
            8 -> 6;
            9 -> 0;
        }