pair,contact1,contact2,flow1,flow2 4dv1_N_,1,26,1,1 4dv1_N_,2,5,1,1 4dv1_N_,3,6,1,1 4dv1_N_,6,9,1,1 4dv1_N_,7,11,1,1 4dv1_N_,22,27,1,1 4dv1_N_,24,37,1,1 4dv1_N_,33,38,1,1 4dv1_N_,39,43,1,1 4dv1_N_,40,44,1,1 4dv1_N_,41,45,1,1 4dv1_N_,42,46,1,1 4dv1_N_,44,47,1,1 4dv1_N_,44,48,1,1 4dv1_N_,45,49,1,1 4dv1_N_,47,50,1,1 4dv1_N_,57,59,1,1