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+digraph G {

+   b [style=bold]

+   c [style=dashed]

+   d [style=dotted]

+   e [style="setlinewidth(3)"]

+   f [style=invis]

+   g [style=solid]

+   a -> b [style=bold]

+   a -> c [style=dashed]

+   a -> d [style=dotted]

+   a -> e [style="setlinewidth(3)"]

+   a -> f [style=invis]

+   a -> g [style=solid]

+   B [shape=box,style="bold,rounded"]

+   C [shape=diamond,style="dashed,rounded"]

+   D [style="dotted,rounded"]

+   E [style="setlinewidth(3),rounded"]

+   BD [style="bold,rounded,diagonals"]

+   CD [shape=diamond, style="dashed,rounded,diagonals"]

+   DD [style="dotted,rounded,diagonals"]

+   ED [style="setlinewidth(3),rounded,diagonals"]

+   BFD [style="filled, bold,rounded,diagonals"]

+   CFD [style="filled, dashed,rounded,diagonals"]

+   DFD [style="filled, dotted,rounded,diagonals"]

+   EFD [style="filled, setlinewidth(3),rounded,diagonals"]

+   B -> BD -> BFD

+   C -> CD -> CFD

+   D -> DD -> DFD

+   E -> ED -> EFD

+   subgraph clusterA {

+      style=rounded

+      1 -> {2 3}

+   }

+

+  

+}