pair,contact1,contact2,flow1,flow2 8or4_H_,12,16,1,1 8or4_H_,13,17,1,1 8or4_H_,14,18,1,1 8or4_H_,19,23,1,1 8or4_H_,20,24,1,1 8or4_H_,21,25,1,1 8or4_H_,25,29,1,1 8or4_H_,26,30,1,1 8or4_H_,35,37,1,1 8or4_H_,38,41,1,1