pair,contact1,contact2,flow1,flow2 3ook_B_,1,6,1,1 3ook_B_,2,6,1,1 3ook_B_,3,7,1,1 3ook_B_,4,8,1,1 3ook_B_,5,9,1,1 3ook_B_,6,10,1,1 3ook_B_,7,11,1,1 3ook_B_,11,12,1,1