pair,contact1,contact2,flow1,flow2 6ahd_s_,2,6,1,1 6ahd_s_,3,7,1,1 6ahd_s_,4,8,1,1 6ahd_s_,5,9,1,1 6ahd_s_,7,10,1,1 6ahd_s_,10,13,1,1 6ahd_s_,12,29,1,1 6ahd_s_,13,29,1,1 6ahd_s_,15,27,1,1 6ahd_s_,16,64,1,1 6ahd_s_,17,25,1,1 6ahd_s_,18,61,1,1 6ahd_s_,18,62,1,1 6ahd_s_,19,22,1,1 6ahd_s_,19,23,1,1 6ahd_s_,20,59,1,1 6ahd_s_,24,46,1,1 6ahd_s_,26,44,1,1 6ahd_s_,28,41,1,1 6ahd_s_,30,39,1,1 6ahd_s_,31,39,1,1 6ahd_s_,33,36,1,1 6ahd_s_,33,37,1,1 6ahd_s_,38,55,1,1 6ahd_s_,40,53,1,1 6ahd_s_,42,51,1,1 6ahd_s_,43,50,1,1 6ahd_s_,45,48,1,1 6ahd_s_,56,59,1,1 6ahd_s_,57,60,1,1 6ahd_s_,66,69,1,1 6ahd_s_,68,71,1,1 6ahd_s_,68,72,1,1 6ahd_s_,69,72,1,1 6ahd_s_,69,73,1,1