FGFN
      -----------
FMGFT ) RCMMCRTGR
       -MTGCCG
        ======
         GGNXNT
        -CRXRRF
         ======
          RGGFCG
         -MTGCCG
          ======
           NXRXXR
          -GNRXMR
           ======
            MTTMX

base: 8
symbols: CFGMNRTX
difficulty: intermediate
restrictions: no multiplication