AHYE
      ----------
 EYEE ) AHXNWUHW
       -UEQEH
        =====
         HYNAU
        -QEUEA
         =====
          YYAEH
         -HENEU
          =====
           EUWXW
          -YEWEN
           =====
            UEXE

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