graph intermediate { labelloc="t"; label="#1: La(1)"; 0 [label="0, VOP = 10"] 1 [label="1, VOP = 21"] 2 [label="2, VOP = 5"] 3 [label="3, VOP = 7"] 4 [label="4, VOP = 6"] {rank=same; 0; 1} {rank=same; 2; 3} 0 -- 1 0 -- 2 0 -- 4 1 -- 2 1 -- 4 2 -- 3 3 -- 4 }