pair,contact1,contact2,flow1,flow2 1aaf_A_,12,14,1,1 1aaf_A_,15,19,1,1 1aaf_A_,15,20,1,1 1aaf_A_,15,23,1,1 1aaf_A_,18,20,1,1 1aaf_A_,18,23,1,1 1aaf_A_,23,28,1,1 1aaf_A_,24,27,1,1 1aaf_A_,25,28,1,1 1aaf_A_,26,27,1,1 1aaf_A_,36,40,1,1 1aaf_A_,36,41,1,1 1aaf_A_,36,44,1,1 1aaf_A_,39,44,1,1 1aaf_A_,44,49,1,1 1aaf_A_,45,47,1,1 1aaf_A_,45,48,1,1 1aaf_A_,45,49,1,1