pair,contact1,contact2,flow1,flow2
2hbh_B_,2,6,1,1
2hbh_B_,3,7,1,1
2hbh_B_,4,8,1,1
2hbh_B_,5,9,1,1
2hbh_B_,6,9,1,1
2hbh_B_,7,10,1,1