EQ2EMu/EQ2/source/depends/boost_1_72_0/libs/graph/test/planar_input_graphs/planar_K_4_e_9_p3.dimacs

p edge 13 15
e 2 6
e 3 9
e 3 1
e 4 2
e 4 0
e 7 5
e 7 0
e 8 11
e 8 1
e 10 6
e 10 1
e 11 9
e 11 6
e 12 5
e 12 9