EQ2EMu/EQ2/source/depends/boost_1_72_0/libs/graph/test/planar_input_graphs/planar_line_1_p2.dimacs

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