YOU SAID:
You know what you doing.
INTO JAPANESE
あなたは何をしているのか知っている。
BACK INTO ENGLISH
I know what you are doing.
INTO JAPANESE
あなた達が何をしているのか分るわ
BACK INTO ENGLISH
I know what you guys are doing.
INTO JAPANESE
あなた達が何をしているのか分るわ
BACK INTO ENGLISH
I know what you guys are doing.
That didn't even make that much sense in English.