????????
      +---------
CWYGG | YGWWGWWW
       -CWYGG
        =====
        MQGFPW
       -MMHGRE
        ======
          FWPCW
         -CWYGG
          =====
          MRCHFW
         -MFPWGM
          ======
          ??????

base: 11
letters: CEFGHMPQRWY
difficulty: medium