1. Ukuqina kanye nokumunca okunamandla, Imisebenzi eminingi. Isihleli sebhasikidi asingeni manzi futhi asikwazi ukumunca uwoyela ngakho singasetshenziswa endlini yokugezela nasekhishini. 2. Ukufakwa okungenazinkinga. Mane ucindezele phansi iphedi yokumunca ukuze ucindezele umoya, uzonamathela odongeni ngokuqinile. 3. Ukusetshenziswa okubanzi. Kunezikhonkwane ezintathu ngemuva kwesihleli sekhishi zokulungisa indawo ukuze ilingane kahle namakhona ahlukahlukene, akusekho ama-degrees angu-90 kuphela. Futhi, njengoba kunezimbobo eziningi zokukhipha amanzi phansi, amanzi angaphezulu azogeleza kalula.