EQ2EMu/EQ2/source/depends/boost_1_72_0/libs/graph/test/planar_input_graphs/planar_line_1_p3.dimacs

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