????????
      +---------
TYJGY | YHPLQHHH
       -TYJGY
        =====
        EWHMEH
       -EYGYGN
        ======
         ETFTJH
        -HPGJHY
         ======
          THYWWH
         -EPGEWE
          ======
          ??????

base: 14
letters: EFGHJLMNPQTWXY
difficulty: hard
missing: X