| 1 | 1. the_graph: Graph 2. the_obj: GraphObject(the_graph) | 1 step |
|   | ||
| 2 | 1. the_graph: Graph 2. the_obj: GraphObject(the_graph) | 1 step |
|   | ||
| 3 | 1. the_graph: Graph 2. the_obj: GraphObject(the_graph) 3. s: traversal(the_graph) 4. i: Vertices(the_graph) 5. df-traversal(the_graph;s) 6. paren(Vertices(the_graph);s) | 1 step |
|   | ||
| 4 | 1. the_graph: Graph 2. the_obj: GraphObject(the_graph) 3. s: traversal(the_graph) 4. i: Vertices(the_graph) 5. df-traversal(the_graph;s) 6. paren(Vertices(the_graph);s) | 2 steps |
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