Kana izhisho lilyo lyokululyi likuchinyisa, libhise ulilashe nokuti zwibuyanana kwauli kuti ulashikilwe nechimwe chibabi chombili uwo, kuna kuti umbili uwo wose ulashilwe mugehena. Kana luboko lulwo lwokululyi lukuchinyisa, ludumule ululashe, nokuti zwibuyanana kwauli kuti kulashike chimwe chibabi chombili uwo, pana kuti umbili uwo wose unde mugehena.