pair,contact1,contact2,flow1,flow2
7b4v_B_,1,4,1,1
7b4v_B_,3,14,1,1
7b4v_B_,6,9,1,1
7b4v_B_,7,10,1,1
7b4v_B_,8,11,1,1
7b4v_B_,8,12,1,1
7b4v_B_,9,13,1,1