Izici zenqubo: ukwakheka komugqa, izibhakabhaka eziyisithupha. Inqubo yokukhiqiza isihlabathi esizicishayo iyasetshenziswa ekuhlanganiseni imiqhele, ukubeka imiqhele nokuthela. Izinto eziboshiwe zithela ngenqubo yokuthela ngokuvundlile. Uhlelo lokuthela lwakhelwe ngokuya ngomqondo wokugeleza okukhulu kanye nesivinini esiphansi sokugeleza. Isakhiwo sokukhipha amanzi esengeziwe sifakwa phezulu ukuze siqinisekise ngempumelelo izinga lokulawulwa kwezinkinga zamachashaza nezimbobo zesihlabathi ezintweni eziboshiwe.