????????
      +---------
MJMMW | QRWFQLPP
       -MJMMW
        =====
        GXXRTL
       -GUJQXL
        ======
          WYWYP
         -JQXJU
          =====
           XLMQP
          -TURTF
           =====
           ?????

base: 14
letters: EFGJLMPQRTUWXY
difficulty: hard
missing: E