EQ2EMu/EQ2/source/depends/boost_1_72_0/libs/graph/test/planar_input_graphs/planar_K_4_e_6_p4.dimacs

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