Isibani esifakwe phezulu esikhanyisa Ngaphakathi ngokukhanya kwemvelo okusatshalaliswe ngokulinganayo.Ifomu elilula, elithambile lenza isibani into engalawuleki ngaphakathi.Ukutholakala kwezinhlobo ezahlukene zokuvula kuvumela ukulungiswa kwezidingo zomuntu ngamunye zabasebenzisi be-lightto.