DAG as force graph

node 0node 1node 2node 3node 4node 5node 6node 7node 8node 9node 10node 11node 12node 13node 14node 15node 16node 17node 18node 19
node 0 -(0)node 1 -(2)node 2 -(3)node 3 -(4)node 4 -(5)node 7 -(6)node 9 -(7)node 18 -(9)node 5 +(1)node 6 M(10)node 8 M(11)node 10 M(12)node 11 -(13)node 12 +(8)node 13 M(14)node 15 M(15)node 17 M(16)node 14 M(17)node 16 M(18)node 19 M(19)