pair,contact1,contact2,flow1,flow2 2ytn_A_,13,22,1,1 2ytn_A_,15,17,1,1 2ytn_A_,15,20,1,1 2ytn_A_,15,31,1,1 2ytn_A_,15,35,1,1 2ytn_A_,18,31,1,1 2ytn_A_,18,35,1,1 2ytn_A_,24,28,1,1 2ytn_A_,25,29,1,1 2ytn_A_,26,30,1,1 2ytn_A_,27,31,1,1 2ytn_A_,28,32,1,1 2ytn_A_,30,33,1,1 2ytn_A_,31,34,1,1 2ytn_A_,32,35,1,1 2ytn_A_,32,36,1,1