"type","value"
strict , "no"
digraph , "yes"
graph_id , "G"
start_scope , "1"
class_id , "graph"
open_bracket , "["
attribute_id , "size"
equals , "="
attribute_value , "6,6"
close_bracket , "]"
node_id , "a"
edge_id , "->"
node_id , "b"
edge_id , "->"
node_id , "c"
start_subgraph , "1"
graph_id , "cluster0"
start_scope , "2"
node_id , "x0"
edge_id , "->"
node_id , "y0"
node_id , "x0"
edge_id , "->"
node_id , "z0"
end_scope , "2"
end_subgraph , "1"
start_subgraph , "1"
graph_id , "cluster1"
start_scope , "2"
node_id , "x1"
edge_id , "->"
node_id , "y1"
node_id , "x1"
edge_id , "->"
node_id , "z1"
end_scope , "2"
end_subgraph , "1"
start_subgraph , "1"
graph_id , "cluster2"
start_scope , "2"
node_id , "x2"
edge_id , "->"
node_id , "y2"
node_id , "x2"
edge_id , "->"
node_id , "z2"
end_scope , "2"
end_subgraph , "1"
node_id , "a"
edge_id , "->"
node_id , "x0"
node_id , "b"
edge_id , "->"
node_id , "x1"
node_id , "b"
edge_id , "->"
node_id , "x2"
node_id , "a"
edge_id , "->"
node_id , "z2"
node_id , "c"
edge_id , "->"
node_id , "z1"
end_scope , "1"