pair,contact1,contact2,flow1,flow2 1y1v_L_,5,14,1,1 1y1v_L_,6,33,1,1 1y1v_L_,10,12,1,1 1y1v_L_,17,20,1,1 1y1v_L_,24,26,1,1 1y1v_L_,29,31,1,1