pair,contact1,contact2,flow1,flow2
3cwd_C_,1,3,1,1
3cwd_C_,3,7,1,1
3cwd_C_,4,8,1,1
3cwd_C_,5,9,1,1
3cwd_C_,6,10,1,1
3cwd_C_,8,12,1,1
3cwd_C_,9,13,1,1