WFQA
      ----------
 AQAA ) WFNCHUFH
       -UATAF
        =====
         FQCWU
        -TAUAW
         =====
          QQWAF
         -FACAU
          =====
           AUHNH
          -QAHAC
           =====
            UANA

base: 10
symbols: ACFHNQTUWX
difficulty: intermediate
missing: X