YOU SAID:

I did a bad thing. A really, really bad thing.

INTO JAPANESE

私は悪いことをしました。本当に、本当に悪いことです。

BACK INTO ENGLISH

I did something bad. Really, really bad.

INTO JAPANESE

私は何か悪いことをしました。本当に、本当に悪い。

BACK INTO ENGLISH

I did something wrong. Really, really bad.

INTO JAPANESE

私は何か悪いことをした。本当に、本当に悪い。

BACK INTO ENGLISH

I did something wrong. Really, really bad.