pair,contact1,contact2,flow1,flow2 3da9_A_,2,5,1,1 3da9_A_,6,9,1,1 3da9_A_,6,10,1,1 3da9_A_,6,11,1,1 3da9_A_,6,16,1,1 3da9_A_,9,12,1,1 3da9_A_,9,14,1,1 3da9_A_,10,13,1,1 3da9_A_,16,18,1,1 3da9_A_,16,19,1,1 3da9_A_,18,21,1,1 3da9_A_,19,23,1,1 3da9_A_,20,24,1,1 3da9_A_,21,25,1,1 3da9_A_,22,25,1,1 3da9_A_,23,26,1,1