NQCU
      ----------
 UCUU ) NQEYWTQW
       -TUAUQ
        =====
         QCYNT
        -AUTUN
         =====
          CCNUQ
         -QUYUT
          =====
           UTWEW
          -CUWUY
           =====
            TUEU

base: 10
symbols: ACEFNQTUWY
difficulty: intermediate
missing: F