pair,contact1,contact2,flow1,flow2
1z8y_I_,1,4,1,1
1z8y_I_,2,6,1,1
1z8y_I_,8,11,1,1
1z8y_I_,10,13,1,1
1z8y_I_,13,17,1,1
1z8y_I_,16,20,1,1
1z8y_I_,18,22,1,1
1z8y_I_,19,23,1,1
1z8y_I_,23,27,1,1
1z8y_I_,24,28,1,1
1z8y_I_,25,29,1,1