pair,contact1,contact2,flow1,flow2 2nbu_A_,2,18,1,1 2nbu_A_,3,17,1,1 2nbu_A_,4,16,1,1 2nbu_A_,5,68,1,1 2nbu_A_,6,14,1,1 2nbu_A_,7,68,1,1 2nbu_A_,7,70,1,1 2nbu_A_,8,10,1,1 2nbu_A_,8,11,1,1 2nbu_A_,8,12,1,1 2nbu_A_,19,22,1,1 2nbu_A_,22,57,1,1 2nbu_A_,23,25,1,1 2nbu_A_,23,26,1,1 2nbu_A_,23,27,1,1 2nbu_A_,23,55,1,1 2nbu_A_,24,28,1,1 2nbu_A_,24,55,1,1 2nbu_A_,25,29,1,1 2nbu_A_,26,30,1,1 2nbu_A_,27,31,1,1 2nbu_A_,28,39,1,1 2nbu_A_,28,53,1,1 2nbu_A_,29,32,1,1 2nbu_A_,29,33,1,1 2nbu_A_,30,34,1,1 2nbu_A_,31,35,1,1 2nbu_A_,38,41,1,1 2nbu_A_,38,42,1,1 2nbu_A_,41,73,1,1 2nbu_A_,41,74,1,1 2nbu_A_,43,71,1,1 2nbu_A_,44,51,1,1 2nbu_A_,45,69,1,1 2nbu_A_,46,49,1,1 2nbu_A_,56,60,1,1 2nbu_A_,57,61,1,1 2nbu_A_,63,64,1,1