"type","value"
strict , "no"
digraph , "yes"
graph_id , "G"
start_scope , "1"
start_subgraph , "1"
graph_id , "cluster_c0"
start_scope , "2"
node_id , "a0"
edge_id , "->"
node_id , "a1"
edge_id , "->"
node_id , "a2"
edge_id , "->"
node_id , "a3"
end_scope , "2"
end_subgraph , "1"
start_subgraph , "1"
graph_id , "cluster_c1"
start_scope , "2"
node_id , "b0"
edge_id , "->"
node_id , "b1"
edge_id , "->"
node_id , "b2"
edge_id , "->"
node_id , "b3"
end_scope , "2"
end_subgraph , "1"
node_id , "x"
edge_id , "->"
node_id , "a0"
node_id , "x"
edge_id , "->"
node_id , "b0"
node_id , "a1"
edge_id , "->"
node_id , "a3"
node_id , "a3"
edge_id , "->"
node_id , "a0"
end_scope , "1"