digraph G { node[style=filled fillcolor="#00ff005f" color="#00ff005f"]
subgraph {e->f subgraph cluster_ss81 {a->b->c}};
subgraph { subgraph { subgraph { subgraph cluster_x { x; subgraph cluster_y {y }}}}}
}
digraph G { node[style=filled fillcolor="#00ff005f" color="#00ff005f"]
subgraph {e->f subgraph cluster_ss81 {a->b->c}};
subgraph { subgraph { subgraph { subgraph cluster_x { x; subgraph cluster_y {y }}}}}
}