YOU SAID:

I think it's real good

INTO JAPANESE

かなりいい感じだと思う

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I think it looks pretty nice

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見た目はかなりいいと思う

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I think it looks pretty good

INTO JAPANESE

私はそれはかなりよさそうだと思う

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I think I it looks pretty good.

INTO JAPANESE

私はそれはかなりよさそうだと思います。

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I think I it pretty good looks.

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私はかなり良いのだと思います。

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I think I was pretty good.

INTO JAPANESE

私はかなり良かったと思います。

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I think I was pretty good.