????????
      ----------
YFGUY ) NYFXWXRG
       -GTNFG
        =====
         FXUUX
        -YFGUY
         =====
         RQWPGR
        -RQPCPY
         ======
           TFUWG
          -CYRXX
           =====
           ?????

base: 12
symbols: CFGNPQRTUWXY
difficulty: hard