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+digraph G {

+  bgcolor="yellow:blue" gradientangle=60 label="Graph"

+

+  subgraph cluster_1 {

+    style=filled fillcolor="green:magenta" label="Cluster" fontcolor="white"

+    node [style=filled]

+	n5 [ shape="box",fillcolor="antiquewhite:aquamarine" ]

+	n4 [ shape="ellipse",fillcolor="bisque4:blue2" ]

+	n3 [ shape="circle",fillcolor="cadetblue1:chocolate1" ]

+	n2 [ shape="diamond",fillcolor="crimson:cyan4" ]

+	n1 [ shape="triangle",fillcolor="deepskyblue2:firebrick" ]

+	n0 [ shape="pentagon",fillcolor="gray24:gray88" ]

+  }

+

+}