pair,contact1,contact2,flow1,flow2 2vwn_L_,1,4,1,1 2vwn_L_,2,14,1,1 2vwn_L_,4,7,1,1 2vwn_L_,5,8,1,1 2vwn_L_,6,9,1,1 2vwn_L_,6,11,1,1 2vwn_L_,6,13,1,1 2vwn_L_,7,9,1,1 2vwn_L_,7,28,1,1 2vwn_L_,10,28,1,1 2vwn_L_,10,30,1,1 2vwn_L_,11,21,1,1 2vwn_L_,12,19,1,1 2vwn_L_,13,14,1,1 2vwn_L_,14,15,1,1 2vwn_L_,14,17,1,1 2vwn_L_,19,30,1,1 2vwn_L_,21,24,1,1 2vwn_L_,22,38,1,1 2vwn_L_,23,33,1,1 2vwn_L_,24,38,1,1 2vwn_L_,24,40,1,1 2vwn_L_,25,31,1,1 2vwn_L_,27,29,1,1