QQNC
      +---------
WNNUL | UNANCNFU
       -WNNUL
        =====
         CNLQN
        -WNNUL
         =====
         FAYFUF
        -YNAQAQ
         ======
          WYYUYU
         -NCAYAY
          ======
           FYNYN

base: 9
letters: ACFLNQUWY
difficulty: easy
restrictions: no multiplication