pair,contact1,contact2,flow1,flow2 7o19_B5_,4,7,1,1 7o19_B5_,5,8,1,1 7o19_B5_,5,9,1,1 7o19_B5_,9,11,1,1 7o19_B5_,9,13,1,1 7o19_B5_,10,14,1,1 7o19_B5_,12,15,1,1