pair,contact1,contact2,flow1,flow2
2r1r_D_,4,6,1,1
2r1r_D_,5,9,1,1
2r1r_D_,6,9,1,1
2r1r_D_,6,10,1,1
2r1r_D_,7,10,1,1
2r1r_D_,8,11,1,1