pair,contact1,contact2,flow1,flow2 1d4r_C_,2,27,1,1 1d4r_C_,3,26,1,1 1d4r_C_,4,25,1,1 1d4r_C_,5,24,1,1 1d4r_C_,6,23,1,1 1d4r_C_,7,22,1,1 1d4r_C_,8,21,1,1 1d4r_C_,9,20,1,1 1d4r_C_,10,19,1,1 1d4r_C_,11,18,1,1 1d4r_C_,12,17,1,1