XATY
      ----------
 YTYY ) XAQNEUAE
       -UYHYA
        =====
         ATNXU
        -HYUYX
         =====
          TTXYA
         -AYNYU
          =====
           YUEQE
          -TYEYN
           =====
            UYQY

base: 10
symbols: AEHNQTUWXY
difficulty: intermediate
missing: W