pair,contact1,contact2,flow1,flow2 7zah_P_,2,5,1,1 7zah_P_,3,6,1,1 7zah_P_,9,11,1,1 7zah_P_,14,17,1,1 7zah_P_,15,27,1,1 7zah_P_,19,24,1,1 7zah_P_,20,24,1,1 7zah_P_,20,25,1,1 7zah_P_,21,36,1,1 7zah_P_,22,44,1,1 7zah_P_,25,38,1,1 7zah_P_,27,29,1,1 7zah_P_,28,39,1,1 7zah_P_,30,37,1,1 7zah_P_,31,34,1,1 7zah_P_,32,35,1,1 7zah_P_,38,42,1,1 7zah_P_,41,44,1,1 7zah_P_,41,45,1,1 7zah_P_,45,49,1,1 7zah_P_,46,51,1,1 7zah_P_,47,50,1,1