pair,contact1,contact2,flow1,flow2 2f4v_N_,3,6,1,1 2f4v_N_,5,20,1,1 2f4v_N_,7,10,1,1 2f4v_N_,15,18,1,1 2f4v_N_,20,22,1,1 2f4v_N_,22,27,1,1 2f4v_N_,24,37,1,1 2f4v_N_,39,43,1,1 2f4v_N_,40,44,1,1 2f4v_N_,41,45,1,1 2f4v_N_,42,46,1,1 2f4v_N_,43,46,1,1 2f4v_N_,43,47,1,1 2f4v_N_,44,48,1,1 2f4v_N_,45,49,1,1 2f4v_N_,46,50,1,1 2f4v_N_,58,59,1,1