genZoneCont _     _     _     _     _ _ zg0 _     _     _      _      _      _      0 = zg0
genZoneCont _     _     _     _     _ _ zg0 _     _     _      _      _      _      0 = zg0
genZoneCont _     _     _     _     _ _ zg0 _     _     _      _      _      _      0 = zg0