s0rg/decompose

digraph  {
    
    n4[color="gray",label="external: 2"];
    n1[color="black",label="1"];
    n2[color="black",label="2"];
    n3[color="black",label="3"];
    n4->n1[label="tcp:1,tcp:2,tcp:3,tcp:2,tcp:3"];
    n1->n2[label="tcp:1,tcp:1,tcp:2,tcp:2"];
    
}