YOU SAID:
They don’t know that we know that they know that we know
INTO JAPANESE
彼らは私たちが知っていることを知っていることを知らない
BACK INTO ENGLISH
They don't know what we know
INTO JAPANESE
彼らは私たちが知っていることを知りません
BACK INTO ENGLISH
They don't know what we know
You've done this before, haven't you.