pair,contact1,contact2,flow1,flow2
8b4r_A_,2,3,1,1
8b4r_A_,4,5,1,1
8b4r_A_,4,19,1,1
8b4r_A_,6,17,1,1
8b4r_A_,8,15,1,1
8b4r_A_,10,13,1,1