????????
      +---------
LHQQJ | YJCQNQRE
       -MEQQR
        =====
         YCQJQ
        -MEQQR
         =====
          RQLRR
         -MEQQR
          =====
          LCLRQE
         -LJCQLR
          ======
           ?????

base: 12
letters: CEFGHJLMNQRY
missing: F G
difficulty: medium
hints: F << G