pair,contact1,contact2,flow1,flow2 7nbu_U_,4,5,1,1 7nbu_U_,4,17,1,1 7nbu_U_,6,9,1,1 7nbu_U_,10,14,1,1 7nbu_U_,11,15,1,1 7nbu_U_,12,16,1,1 7nbu_U_,13,17,1,1 7nbu_U_,14,18,1,1 7nbu_U_,15,19,1,1 7nbu_U_,16,20,1,1 7nbu_U_,17,21,1,1 7nbu_U_,18,21,1,1 7nbu_U_,18,22,1,1 7nbu_U_,19,23,1,1 7nbu_U_,20,24,1,1 7nbu_U_,21,25,1,1 7nbu_U_,22,26,1,1 7nbu_U_,26,30,1,1 7nbu_U_,27,31,1,1 7nbu_U_,28,32,1,1 7nbu_U_,29,33,1,1 7nbu_U_,30,34,1,1 7nbu_U_,39,43,1,1 7nbu_U_,40,44,1,1 7nbu_U_,41,45,1,1 7nbu_U_,42,46,1,1 7nbu_U_,43,47,1,1 7nbu_U_,44,48,1,1 7nbu_U_,45,49,1,1 7nbu_U_,46,50,1,1 7nbu_U_,47,50,1,1 7nbu_U_,47,51,1,1 7nbu_U_,48,52,1,1 7nbu_U_,49,53,1,1 7nbu_U_,50,54,1,1 7nbu_U_,51,55,1,1 7nbu_U_,52,56,1,1 7nbu_U_,53,57,1,1 7nbu_U_,54,58,1,1 7nbu_U_,55,59,1,1 7nbu_U_,56,60,1,1 7nbu_U_,57,61,1,1 7nbu_U_,58,62,1,1 7nbu_U_,60,64,1,1 7nbu_U_,61,62,1,1 7nbu_U_,61,65,1,1 7nbu_U_,63,66,1,1 7nbu_U_,64,67,1,1