????????
      ----------
QNCXC ) NWRLRQWC
       -NQNTC
        =====
         LCPGQ
        -QNCXC
         =====
          YUYTW
         -TLCLU
          =====
           YNGWC
          -TLCLU
           =====
           ?????

base: 12
symbols: CGLNPQRTUWXY
difficulty: hard