TYXW
      ----------
 WXWW ) TYUAQFYQ
       -FWEWY
        =====
         YXATF
        -EWFWT
         =====
          XXTWY
         -YWAWF
          =====
           WFQUQ
          -XWQWA
           =====
            FWUW

base: 10
symbols: AEFNQTUWXY
difficulty: intermediate
missing: N