pair,contact1,contact2,flow1,flow2 7tah_D_,6,9,1,1 7tah_D_,7,10,1,1 7tah_D_,20,22,1,1 7tah_D_,21,24,1,1 7tah_D_,21,25,1,1 7tah_D_,22,26,1,1