YOU SAID:

I saw the thing which I had seen, and then I saw the thing which I had not seen.

INTO JAPANESE

私が見たものを見たし、私は私が見たことのないものを見た。

BACK INTO ENGLISH

I saw what I saw, I saw nothing that I've seen.

INTO JAPANESE

私は何を見た見た、私は何も見たことを見た。

BACK INTO ENGLISH

I saw what I saw, I saw nothing.

INTO JAPANESE

私は私が見たものを見て、何を見た。

BACK INTO ENGLISH

I saw what I saw, what I saw.

INTO JAPANESE

私が見たものを見た私は何を見た。

BACK INTO ENGLISH

I saw what I saw what I saw.

INTO JAPANESE

何を見た私は何を見た見た。

BACK INTO ENGLISH

I saw what I saw what I saw.