YFB4 raupapa puehu pahū-tohu toru-wahanga nekeneke tukutahi ko te tino kopakia whaiaro powhiriwhiri-mataohia squirrel-cage toru-wahanga nekeneke tukutahi. Kei a ia nga ahuatanga o te iti o te rahi, te taimaha marama, te mahi pono, te ahua ataahua, me etahi atu, he pai te kaha, he iti te haruru, he iti te wiri me te iti o te pāmahana. He nui, he pai te mahi, he anga whakamua me te whaitake te hanganga pahū-whakapono, te whakamahi haumaru me te pono, me era atu.