????????
      +---------
MFRFX | GGEQLLXT
       -TXMXJ
        =====
        MJJMFL
       -MLFTUE
        ======
         MEFXXX
        -MJNNQL
         ======
          MPUFGT
         -MMPRHH
          ======
          ??????

base: 14
letters: EFGHJLMNPQRTUX
difficulty: hard
hints: H << L