pair,contact1,contact2,flow1,flow2
7n21_A_,1,4,1,1
7n21_A_,3,6,1,1
7n21_A_,6,9,1,1
7n21_A_,6,10,1,1
7n21_A_,7,11,1,1
7n21_A_,9,12,1,1
7n21_A_,9,13,1,1
7n21_A_,10,13,1,1
7n21_A_,12,14,1,1
7n21_A_,13,16,1,1