YOU SAID:
I don't understand what you're saying.
INTO JAPANESE
私は何を言っている理解していません。
BACK INTO ENGLISH
I say what you do not understand.
INTO JAPANESE
私はあなたが理解するいないと言います。
BACK INTO ENGLISH
I understand you to say no.
INTO JAPANESE
私はノーと言うことを理解します。
BACK INTO ENGLISH
I understand that say no.
INTO JAPANESE
私はノーと言うことを理解します。
BACK INTO ENGLISH
I understand that say no.
That didn't even make that much sense in English.