planar_K_5_sub_10.dimacs 87 B

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  1. c A subgraph of K_5
  2. p edge 5 9
  3. e 0 1
  4. e 0 2
  5. e 0 3
  6. e 0 4
  7. e 1 2
  8. e 1 3
  9. e 1 4
  10. e 2 3
  11. e 2 4