CNWA
      ----------
 AWAA ) CNETFUNF
       -UAQAN
        =====
         NWTCU
        -QAUAC
         =====
          WWCAN
         -NATAU
          =====
           AUFEF
          -WAFAT
           =====
            UAEA

base: 10
symbols: ACEFNQTUWY
difficulty: intermediate
missing: Y