pair,contact1,contact2,flow1,flow2
1b28_A_,5,7,1,1
1b28_A_,15,19,1,1
1b28_A_,16,20,1,1
1b28_A_,17,21,1,1
1b28_A_,18,21,1,1
1b28_A_,18,22,1,1
1b28_A_,19,23,1,1
1b28_A_,21,25,1,1
1b28_A_,22,26,1,1
1b28_A_,23,27,1,1
1b28_A_,24,27,1,1
1b28_A_,24,28,1,1
1b28_A_,25,29,1,1
1b28_A_,26,31,1,1
1b28_A_,27,30,1,1
1b28_A_,32,36,1,1
1b28_A_,33,37,1,1
1b28_A_,36,39,1,1
1b28_A_,37,40,1,1
1b28_A_,37,41,1,1
1b28_A_,39,43,1,1