pair,contact1,contact2,flow1,flow2
2rel_A_,3,5,1,1
2rel_A_,28,30,1,1
2rel_A_,31,51,1,1
2rel_A_,43,54,1,1
2rel_A_,44,52,1,1
2rel_A_,45,52,1,1
2rel_A_,47,50,1,1