EQ2EMu/EQ2/source/depends/boost_1_72_0/libs/graph/test/planar_input_graphs/planar_K_4_e_8.dimacs

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