Ko e tuʻunga ia ʻo e anga-fakamatelié pea ʻikai ke maʻu ha poto, ivi, pe taukei fakaengāue. Ko e vaivaí ko ha tuʻunga ia ʻo e moʻuí. ʻOku vaivai ʻa e kakai kotoa pē, pea ʻoku tuʻunga ʻi he ʻaloʻofa ʻa e ʻOtuá ʻa ʻenau lava ʻo maʻu ha mālohi ke nau fai ʻa e ngaahi ngāue ʻoku māʻoniʻoní (Sēkope 4:6–7). ʻOku hā fakakonga ʻa e vaivai ko ení ʻi he ngaahi vaivai fakafoʻituituí ʻa ia ʻoku maʻu ʻe he tangata taki taha.