pair,contact1,contact2,flow1,flow2
2nr1_A_,1,4,1,1
2nr1_A_,1,5,1,1
2nr1_A_,2,6,1,1
2nr1_A_,3,7,1,1
2nr1_A_,4,8,1,1
2nr1_A_,5,9,1,1
2nr1_A_,6,10,1,1
2nr1_A_,7,11,1,1
2nr1_A_,8,12,1,1
2nr1_A_,9,12,1,1
2nr1_A_,9,13,1,1
2nr1_A_,10,14,1,1
2nr1_A_,11,15,1,1
2nr1_A_,12,15,1,1
2nr1_A_,12,16,1,1
2nr1_A_,13,17,1,1
2nr1_A_,14,18,1,1
2nr1_A_,15,19,1,1
2nr1_A_,17,20,1,1
2nr1_A_,17,21,1,1
2nr1_A_,18,22,1,1
2nr1_A_,19,23,1,1