JWC
      +---------
UUEEX | JLUWWNCJ
       -WUCGNX
        ======
         WCECNC
        -LULXUX
         ======
          CJGECJ
         -GUWCGX
          ======
           JWFQJ

base: 11
letters: CEFGJLNQUWX
difficulty: intermediate
restrictions: no multiplication