EQ2EMu/EQ2/source/depends/boost_1_72_0/libs/graph/test/planar_input_graphs/planar_K_4_e_5_p0.dimacs

p edge 9 11
e 0 4
e 0 8
e 1 3
e 1 7
e 2 3
e 2 6
e 4 1
e 5 3
e 5 7
e 6 7
e 8 6