pair,contact1,contact2,flow1,flow2
4yl8_B_,1,13,1,1
4yl8_B_,3,11,1,1
4yl8_B_,4,9,1,1
4yl8_B_,4,31,1,1
4yl8_B_,5,6,1,1
4yl8_B_,6,9,1,1
4yl8_B_,14,17,1,1