EQ2EMu/EQ2/source/depends/boost_1_72_0/libs/graph/test/planar_input_graphs/planar_K_4_e_6_p5.dimacs

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