pair,contact1,contact2,flow1,flow2
2mev_4_,11,13,1,1
2mev_4_,14,17,1,1
2mev_4_,14,18,1,1
2mev_4_,15,19,1,1
2mev_4_,26,28,1,1
2mev_4_,26,29,1,1
2mev_4_,35,37,1,1
2mev_4_,48,50,1,1