pair,contact1,contact2,flow1,flow2
1bal_A_,13,16,1,1
1bal_A_,14,17,1,1
1bal_A_,15,19,1,1
1bal_A_,17,20,1,1
1bal_A_,18,21,1,1
1bal_A_,18,22,1,1
1bal_A_,19,23,1,1
1bal_A_,20,25,1,1
1bal_A_,21,24,1,1
1bal_A_,34,37,1,1
1bal_A_,41,45,1,1
1bal_A_,44,48,1,1