pair,contact1,contact2,flow1,flow2
2nab_A_,3,10,1,1
2nab_A_,7,9,1,1
2nab_A_,9,22,1,1
2nab_A_,12,21,1,1
2nab_A_,14,18,1,1
2nab_A_,14,19,1,1
2nab_A_,14,30,1,1
2nab_A_,17,30,1,1
2nab_A_,17,37,1,1
2nab_A_,19,20,1,1
2nab_A_,24,28,1,1
2nab_A_,25,29,1,1
2nab_A_,26,30,1,1
2nab_A_,27,31,1,1
2nab_A_,28,32,1,1
2nab_A_,30,33,1,1
2nab_A_,31,34,1,1
2nab_A_,32,35,1,1
2nab_A_,33,36,1,1
2nab_A_,34,37,1,1
2nab_A_,38,41,1,1