pair,contact1,contact2,flow1,flow2 2agh_C_,2,4,1,1 2agh_C_,5,6,1,1 2agh_C_,5,7,1,1 2agh_C_,8,12,1,1 2agh_C_,9,13,1,1 2agh_C_,11,15,1,1 2agh_C_,12,16,1,1 2agh_C_,13,17,1,1 2agh_C_,14,18,1,1 2agh_C_,15,19,1,1 2agh_C_,28,30,1,1 2agh_C_,30,31,1,1