YOU SAID:

white is black if black is white when white is not black

INTO JAPANESE

白が黒でなければ白が黒で、白が黒でなければ白

BACK INTO ENGLISH

If white is not black white is black and white is not black

INTO JAPANESE

白が黒でなければ白は黒で白は黒ではありません

BACK INTO ENGLISH

If white is not black then white is not black and white is not black

INTO JAPANESE

白が黒でなければ白は黒ではなく白は黒ではない

BACK INTO ENGLISH

If white is not black then white is not black and white is not black