pair,contact1,contact2,flow1,flow2 1al2_4_,3,20,1,1 1al2_4_,5,18,1,1 1al2_4_,7,16,1,1 1al2_4_,14,15,1,1 1al2_4_,15,17,1,1 1al2_4_,26,29,1,1 1al2_4_,27,30,1,1 1al2_4_,33,35,1,1 1al2_4_,40,42,1,1 1al2_4_,41,44,1,1 1al2_4_,41,45,1,1 1al2_4_,42,46,1,1 1al2_4_,46,48,1,1 1al2_4_,53,56,1,1