YOU SAID:

I don't think that I don't know.

INTO JAPANESE

知らないとは思いません。

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I don't think I don't know

INTO JAPANESE

知らないと思います

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I don't know

INTO JAPANESE

わからない

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I do not know

INTO JAPANESE

分からない

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I don't know.

INTO JAPANESE

わかりません。

BACK INTO ENGLISH

I don't know.