EQ2EMu/EQ2/source/depends/boost_1_72_0/libs/graph/test/planar_input_graphs/planar_K_4_e_8_p9.dimacs

p edge 12 14
e 0 11
e 0 3
e 1 10
e 2 1
e 4 1
e 4 5
e 5 10
e 6 10
e 7 5
e 7 6
e 8 3
e 9 8
e 9 2
e 11 6