pair,contact1,contact2,flow1,flow2 4b7t_B_,1,5,1,1 4b7t_B_,2,6,1,1 4b7t_B_,3,7,1,1 4b7t_B_,4,8,1,1 4b7t_B_,5,9,1,1 4b7t_B_,6,10,1,1 4b7t_B_,7,11,1,1 4b7t_B_,8,12,1,1 4b7t_B_,9,13,1,1 4b7t_B_,10,14,1,1 4b7t_B_,11,15,1,1 4b7t_B_,13,16,1,1