i1 : G = mixedGraph(graph{{3,1}},digraph {{1,2},{2,3}},bigraph {{3,4},{2,4}})
o1 = MixedGraph{Bigraph => Bigraph{2 => {4} }}
3 => {4}
4 => {3, 2}
Digraph => Digraph{1 => {2}}
2 => {3}
3 => {}
Graph => Graph{1 => {3}}
3 => {1}
o1 : MixedGraph
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i2 : toString G
o2 = new HashTable from {Digraph => digraph ({1, 2, 3}, {{1, 2}, {2, 3}}),
Graph => graph ({3, 1}, {{1, 3}}), Bigraph => bigraph ({3, 4, 2}, {{4,
3}, {4, 2}})}
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