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積 つみ上 あげなければならない
tsumiagenakereba naranai

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Ichidan Verb
, 
i-Adjective

Expresses obligation ("must do") of 積み上げる

1. Must accumulate.; Must build up.; Must stack up.

Obligation

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積み上げなければならない

積み上げなければならない【つみあげなければならない】 Activity

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