????????
      +---------
LGLCY | MXYXEYGE
       -LGLCY
        =====
        LYXGYY
       -LCMXNM
        ======
         LMMYEG
        -LLGNTL
         ======
          LECXYE
         -LEEHMX
          ======
          ??????

base: 11
letters: CEGHLMNQTXY
difficulty: medium
hints: M << H
missing: Q