YOU SAID:

she said he said they said that I said that they said that they don't know that we know they know we know

INTO JAPANESE

彼女は、彼らが私たちが知っていることを知っていることを知らないと言ったと言ったと言いました

BACK INTO ENGLISH

She said they said they didn't know what we knew

INTO JAPANESE

彼女は、彼らが私たちが知っていることを知らないと言ったと言いました

BACK INTO ENGLISH

She said they said they didn't know what we knew