A     JACK         PLAY
                        A          AND  JACK
                      PLAY     WORK    MAKES
                  JACK          DULL  JACK
                  NO         BOY         JACK
                  MAKES  ALL   BOY  A    WORK
                     BOY    NO        AND
                  ALL       ALL   ALL     PLAY
                  BOY JACK   A      WORK
                     WORK    MAKES       DULL

aLL wORK aND nO pLAY mAKES jACK a dULL bOY