YOU SAID:
I don't know what you are talking about
INTO JAPANESE
私はあなたが何について話している知らない
BACK INTO ENGLISH
I'm talking about what you don't know
INTO JAPANESE
私は知らない何を話してください。
BACK INTO ENGLISH
I don't know what to tell.
INTO JAPANESE
指示するか分からない。
BACK INTO ENGLISH
Don't know how to tell.
INTO JAPANESE
どのように指示するか分からない。
BACK INTO ENGLISH
I don't know how to tell you.
INTO JAPANESE
私はどのようにあなたを知らない。
BACK INTO ENGLISH
I don't know how you.
INTO JAPANESE
私は知らないどのようにします。
BACK INTO ENGLISH
I do not know how.
INTO JAPANESE
なんで
BACK INTO ENGLISH
I do not know
INTO JAPANESE
なんで
BACK INTO ENGLISH
I do not know
That didn't even make that much sense in English.