YOU SAID:

wow i didn't see this.

INTO JAPANESE

わあ、見なかった。

BACK INTO ENGLISH

Wow, I didn't see it.

INTO JAPANESE

わかりません

BACK INTO ENGLISH

I don't know

INTO JAPANESE

わからない

BACK INTO ENGLISH

I do not Know

INTO JAPANESE

わからない

BACK INTO ENGLISH

I do not Know