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役 やく立 たたなければいけない
yakutatanakereba ikenai

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Godan Verb (tsu)
, 
i-Adjective

Alternative obligation form of 役立つ

1. Must be useful; Must be of service

Obligation

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役立たなければいけない

役立たなければいけない【やくたたなければいけない】 Activity

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