????????
      ----------
URFRF ) PFPPYFEC
       -RHYHP
        =====
        LUMPUF
       -LLNENF
        ======
         LNUPHE
        -LGLMLE
         ======
          LHMYHC
         - MPUPH
          ======
          ??????

base: 12
symbols: CEFGHLMNPRUY
difficulty: medium