YOU SAID:

I don't know, please don't punch me.

INTO JAPANESE

私は知らない、私をパンチしないでください。

BACK INTO ENGLISH

I don't know, I don't punch.

INTO JAPANESE

私は知らない、パンチはありません。

BACK INTO ENGLISH

I do not know the punch.

INTO JAPANESE

パンチがわからない。

BACK INTO ENGLISH

I can't punch.

INTO JAPANESE

私はパンチできません。

BACK INTO ENGLISH

I can't punch.