pair,contact1,contact2,flow1,flow2
2wsf_J_,3,7,1,1
2wsf_J_,13,16,1,1
2wsf_J_,14,17,1,1
2wsf_J_,15,18,1,1
2wsf_J_,15,19,1,1
2wsf_J_,21,24,1,1
2wsf_J_,24,27,1,1
2wsf_J_,28,31,1,1
2wsf_J_,29,33,1,1
2wsf_J_,35,36,1,1
2wsf_J_,37,38,1,1