pair,contact1,contact2,flow1,flow2 2j28_U_,11,68,1,1 2j28_U_,11,69,1,1 2j28_U_,17,20,1,1 2j28_U_,25,34,1,1 2j28_U_,35,38,1,1 2j28_U_,42,43,1,1 2j28_U_,87,89,1,1 2j28_U_,97,98,1,1