pair,contact1,contact2,flow1,flow2 3iwb_B_,2,4,1,1 3iwb_B_,15,17,1,1 3iwb_B_,15,18,1,1 3iwb_B_,15,19,1,1 3iwb_B_,17,20,1,1 3iwb_B_,18,21,1,1 3iwb_B_,20,52,1,1 3iwb_B_,21,24,1,1 3iwb_B_,21,25,1,1 3iwb_B_,22,26,1,1 3iwb_B_,23,27,1,1 3iwb_B_,24,28,1,1 3iwb_B_,25,29,1,1 3iwb_B_,26,30,1,1 3iwb_B_,27,31,1,1 3iwb_B_,28,32,1,1 3iwb_B_,29,33,1,1 3iwb_B_,30,34,1,1 3iwb_B_,31,35,1,1 3iwb_B_,32,36,1,1 3iwb_B_,33,36,1,1 3iwb_B_,34,37,1,1 3iwb_B_,36,38,1,1 3iwb_B_,41,58,1,1 3iwb_B_,42,58,1,1 3iwb_B_,44,46,1,1 3iwb_B_,44,56,1,1 3iwb_B_,46,54,1,1 3iwb_B_,47,50,1,1 3iwb_B_,48,52,1,1