Ko te nati rivet, e mōhiotia ana ko te nati whakau-ake, he nati mō te pereti angiangi, te pereti angiangi rānei. He porowhita tōna āhua, ā, kei tetahi pito he niho whakawātea me te awaawa ārahi. I te nuinga o te wā, mā te whakamahi i ngā pereti whakarewa ka kitea te raruraru he tawhiti rawa te kōhao o te nati rivet me te rerekētanga i muri i te pēhi me te rivet. Ka whakatakotoria tēnei raruraru rerekētanga. Ka taea e tātou te whakanui ake i ngā whakatuwheratanga mīhini i ngā taha e rua o te nati hei whakaiti i te rerekētanga o te rivet.
Te wā tuku: Hakihea-22-2021