pair,contact1,contact2,flow1,flow2 1ook_A_,8,17,1,1 1ook_A_,12,15,1,1 1ook_A_,12,16,1,1 1ook_A_,12,17,1,1 1ook_A_,12,22,1,1 1ook_A_,15,18,1,1 1ook_A_,15,20,1,1 1ook_A_,16,19,1,1