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有効 ゆうこう性 せいじゃないです
yūkōseijanaidesu

敬
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Noun
, 
Desu Copula
, 
Negation Auxiliary

The polite negative form of 有効性

1. It's not effectiveness.; It isn't valid.

Negative
, 
Polite
, 
Casual Register

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有効性じゃないです

有効性じゃないです【ゆうこうせいじゃないです】 Activity

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