?????????
     +----------
FFCC | FQFQXWQMQ
      -FWXCQ
       =====
         HFFW
        -MHCH
         ====
          XFFQ
         -FFCC
          ====
           CFFM
          -MHCH
           ====
           QXFCQ
          -QFMCX
           =====
            ????

base: 7
letters: CFHMQWX
difficulty: easy