E rua nga wahanga o te whakamatao whakamatao wai: te Anga Waho me te anga o roto.Kei roto i te anga o waho he rango, he uhi tohatoha wai me tetahi uhi wai hoki.Ko te tauira whaipainga ka whakawhiwhia ki te kokoru hinu me te putorino whakaputa hinu, he paipa whakaputa hinu, he putorino putanga hau, he mono takahuri hau, he kohao whakapuru konutea me te atanga ine wera.Ko te waiariki o te whakamatao whakamatao wai mai i te kokoru pupuha i te tinana rango, a ka rere kopikopiko ki te putanga pupuha ma ia waahanga kopikopiko i runga i te raupapa.Ko te reo Matao ka tango i te rere-rua, ara, ka uru te reo whakamatao ki tetahi haurua o te ngongo whakamatao ma te uhi uru wai, katahi ka rere mai i te taupoki wai hoki ki te haurua o te ngongo whakamatao ki tera taha o te wai. uhi tohatoha me te paipa putanga.I roto i te tukanga o te rere putorino-rua, ka tukuna te wera para mai i te reo wera ngongo e te putanga, kia mau tonu ai te pāmahana mahi kua tohua.