????????
      +---------
JWXQN | LGWMEPEM
       -JWXQN
        =====
         NJRLP
        -PEXWM
         =====
         JEMPXE
        -ETPQTM
         ======
          EPEXUM
         -EQUTUP
          ======
          ??????

base: 14
letters: EFGJLMNPQRTUWX
difficulty: intermediate
missing: F