pair,contact1,contact2,flow1,flow2
2zc5_A_,2,15,1,1
2zc5_A_,3,16,1,1
2zc5_A_,5,13,1,1
2zc5_A_,5,14,1,1
2zc5_A_,7,9,1,1
2zc5_A_,7,10,1,1
2zc5_A_,7,11,1,1