pair,contact1,contact2,flow1,flow2
1bhi_A_,1,4,1,1
1bhi_A_,3,5,1,1
1bhi_A_,7,18,1,1
1bhi_A_,9,16,1,1
1bhi_A_,10,28,1,1
1bhi_A_,11,15,1,1
1bhi_A_,14,27,1,1
1bhi_A_,14,31,1,1
1bhi_A_,20,23,1,1
1bhi_A_,21,25,1,1
1bhi_A_,22,23,1,1
1bhi_A_,22,26,1,1
1bhi_A_,23,27,1,1
1bhi_A_,24,28,1,1
1bhi_A_,25,29,1,1
1bhi_A_,26,30,1,1
1bhi_A_,27,31,1,1
1bhi_A_,28,32,1,1
1bhi_A_,29,33,1,1
1bhi_A_,29,36,1,1
1bhi_A_,33,36,1,1