YOU SAID:

i know him, that cant be.

INTO JAPANESE

私は彼を知っている、それはできない。

BACK INTO ENGLISH

I know him, it's not.

INTO JAPANESE

違うことは分かってる

BACK INTO ENGLISH

I know it's not.

INTO JAPANESE

違うことは分かってる

BACK INTO ENGLISH

I know it's not.