Lsystem Hilbert3D;



  width=0.35;
  angle = 90;
  colortable = "hsv.tcl";
  baseelement = {
    shape = cylinder;
    caps = open;
    sides = 5;
  };

  useralphabet={A,B,C,D};
  axiom=A;
  lifespan =3;

  developmentrules={
    pA: A : true -> ##B-F+CFC+F-D&F^D-F+&&CFC+F+B//;
    pB: B : true -> ##A&F^CFB^F^D^^-F-D^|F^B|FC^F^A//;
    pC: C : true -> ##|D^|F^B-F+C^F^A&&FA&F^C+F+B^F^D//;
    pD: D : true -> ##|CFB-F+B|FA&F^A&&FB-F+B|FC//;
  };