EQ2EMu/EQ2/source/depends/boost_1_72_0/libs/graph/test/planar_input_graphs/nonplanar_K_5_e_8_p4.dimacs

p edge 13 18
e 1 2
e 1 4
e 3 4
e 3 8
e 5 0
e 6 3
e 6 4
e 6 0
e 7 4
e 7 8
e 9 5
e 9 8
e 10 2
e 10 0
e 11 6
e 11 8
e 12 3
e 12 0