pair,contact1,contact2,flow1,flow2 1bbg_A_,5,6,1,1 1bbg_A_,5,18,1,1 1bbg_A_,6,11,1,1 1bbg_A_,6,13,1,1 1bbg_A_,6,18,1,1 1bbg_A_,9,12,1,1 1bbg_A_,10,26,1,1 1bbg_A_,11,28,1,1 1bbg_A_,13,16,1,1 1bbg_A_,17,29,1,1 1bbg_A_,18,35,1,1 1bbg_A_,19,27,1,1 1bbg_A_,19,35,1,1 1bbg_A_,27,39,1,1 1bbg_A_,31,35,1,1 1bbg_A_,32,36,1,1 1bbg_A_,33,37,1,1 1bbg_A_,34,39,1,1 1bbg_A_,35,36,1,1 1bbg_A_,36,40,1,1 1bbg_A_,37,40,1,1