CU-NI zopangidwa zopendekera nthawi zambiri zimaperekedwa ngati machubu otsekemera. Kuphatikizika kwa maubwino abwino komanso mphamvu zimapereka zabwino kwambiri. Kuphatikiza pa izi, zoyenera zopangidwa izi zimagonjetsedwanso ndi dzimbiri, makutidwetion, akukhotakhota, kupsinjika kumalepheretsa kupsinjika.