YOU SAID:

No punctuation is better

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句読点無い方がいい

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No punctuation should

INTO JAPANESE

句読点がないです。

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There is no punctuation.

INTO JAPANESE

句読点はありません。

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No punctuation.

INTO JAPANESE

句読点はありません。

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There are no punctuation marks.

INTO JAPANESE

句読点はありません。

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There are no punctuation marks.