???????
      +--------
JGTLW | UYRRRPL
       -JGTLW
        =====
        YQRHWP
       -GEXTUU
        ======
         PEJQWL
        -PXGTPY
         ======
         ??????

base: 14
letters: EGHJLNPQRTUWXY
difficulty: hard
missing: N