pair,contact1,contact2,flow1,flow2
1a7f_B_,9,13,1,1
1a7f_B_,10,14,1,1
1a7f_B_,11,15,1,1
1a7f_B_,12,15,1,1
1a7f_B_,12,16,1,1
1a7f_B_,13,17,1,1
1a7f_B_,14,18,1,1
1a7f_B_,15,18,1,1
1a7f_B_,15,19,1,1