????????
      +---------
CQCJC | HQRRUJCC
       -PMPHP
        =====
        UQHPFJ
       -UJWCFU
        ======
         UFCRCC
        -UHJQRJ
         ======
          UWHUMC
         -UFFEJQ
          ======
           ?????

base: 11
letters: CEFHJMPQRUW
difficulty: medium