QUFA
      ----------
 AFAA ) QUCXHNUH
       -NATAU
        =====
         UFXQN
        -TANAQ
         =====
          FFQAU
         -UAXAN
          =====
           ANHCH
          -FAHAX
           =====
            NACA

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