HWCY
      ----------
 YCYY ) HWFNQEWQ
       -EYAYW
        =====
         WCNHE
        -AYEYH
         =====
          CCHYW
         -WYNYE
          =====
           YEQFQ
          -CYQYN
           =====
            EYFY

base: 10
symbols: ACEFHNQUWY
difficulty: intermediate
missing: U