YOU SAID:
did you know that i knew that you knew that i knew about that little party you had
INTO JAPANESE
私はあなたが私があなたが持っていたその小さなパーティーについて知っていることを知っていたことを知っていたことを知っていました
BACK INTO ENGLISH
I knew you knew that I knew that I knew about that little party you had
INTO JAPANESE
私はあなたが知っていたことを知っていた
BACK INTO ENGLISH
I knew what you knew
INTO JAPANESE
私はあなたが知っていたことを知っていた
BACK INTO ENGLISH
I knew what you knew
That didn't even make that much sense in English.