EQ2EMu/EQ2/source/depends/boost_1_72_0/libs/graph/test/planar_input_graphs/nonplanar_case_C_4.dimacs

p edge 10 15

e 0 7
e 0 4
e 0 6
e 1 7
e 1 2
e 1 8
e 2 6
e 2 7
e 3 5
e 3 9
e 4 8
e 4 9
e 5 6
e 6 9
e 7 9