????????
      +---------
TEJJE | QEXJFXLU
       -TEJJE
        =====
         URUUX
        -HUXLR
         =====
         TFRFUL
        -TFQUGM
         ======
           LEQUU
          -PMHHL
           =====
           ?????

base: 14
letters: EFGHJLMPQRTUWX
difficulty: hard
missing: W