pair,contact1,contact2,flow1,flow2
4f0z_C_,9,10,1,1
4f0z_C_,18,20,1,1
4f0z_C_,20,27,1,1
4f0z_C_,21,23,1,1
4f0z_C_,21,24,1,1
4f0z_C_,24,26,1,1