pair,contact1,contact2,flow1,flow2
2xnd_J_,1,5,1,1
2xnd_J_,4,7,1,1
2xnd_J_,6,10,1,1
2xnd_J_,11,14,1,1
2xnd_J_,13,16,1,1
2xnd_J_,14,17,1,1
2xnd_J_,17,21,1,1
2xnd_J_,18,22,1,1
2xnd_J_,23,27,1,1
2xnd_J_,24,28,1,1
2xnd_J_,25,29,1,1
2xnd_J_,26,30,1,1
2xnd_J_,28,32,1,1
2xnd_J_,29,33,1,1
2xnd_J_,30,34,1,1
2xnd_J_,31,35,1,1
2xnd_J_,39,41,1,1
2xnd_J_,47,50,1,1
2xnd_J_,49,53,1,1
2xnd_J_,50,54,1,1
2xnd_J_,53,57,1,1
2xnd_J_,54,58,1,1
2xnd_J_,57,60,1,1
2xnd_J_,57,61,1,1
2xnd_J_,58,62,1,1
2xnd_J_,61,65,1,1
2xnd_J_,64,68,1,1
2xnd_J_,65,69,1,1
2xnd_J_,68,72,1,1