pair,contact1,contact2,flow1,flow2
4wpb_C_,1,3,1,1
4wpb_C_,2,5,1,1
4wpb_C_,3,6,1,1
4wpb_C_,6,9,1,1
4wpb_C_,7,9,1,1
4wpb_C_,10,12,1,1
4wpb_C_,14,17,1,1
4wpb_C_,14,18,1,1
4wpb_C_,15,19,1,1
4wpb_C_,16,19,1,1
4wpb_C_,18,21,1,1
4wpb_C_,19,22,1,1
4wpb_C_,21,24,1,1
4wpb_C_,23,26,1,1