YOU SAID:

is that a hard sentence i suppose not but you never know

INTO JAPANESE

あなたが決して知っていることはないと思います。

BACK INTO ENGLISH

I think that you never know.

INTO JAPANESE

あなたは決して知らないと思います。

BACK INTO ENGLISH

I think you never know.

INTO JAPANESE

あなたは決して知らないと思う。

BACK INTO ENGLISH

I think you never know.