pair,contact1,contact2,flow1,flow2 1wu1_B_,3,6,1,1 1wu1_B_,3,7,1,1 1wu1_B_,4,7,1,1 1wu1_B_,6,18,1,1 1wu1_B_,7,10,1,1 1wu1_B_,8,11,1,1 1wu1_B_,9,12,1,1 1wu1_B_,9,16,1,1 1wu1_B_,10,12,1,1 1wu1_B_,11,38,1,1 1wu1_B_,12,15,1,1 1wu1_B_,13,38,1,1 1wu1_B_,13,40,1,1 1wu1_B_,14,28,1,1 1wu1_B_,15,26,1,1 1wu1_B_,17,24,1,1 1wu1_B_,19,22,1,1 1wu1_B_,26,40,1,1 1wu1_B_,28,31,1,1 1wu1_B_,29,48,1,1 1wu1_B_,30,43,1,1 1wu1_B_,31,48,1,1 1wu1_B_,32,41,1,1 1wu1_B_,34,37,1,1 1wu1_B_,34,39,1,1 1wu1_B_,36,38,1,1 1wu1_B_,36,39,1,1