MUME
      -----------
MXUML ) GFXXFGLUG
       -XLUFFU
        ======
         UUEHEL
        -FGHGGM
         ======
          GUUMFU
         -XLUFFU
          ======
           EHGHHG
          -UEGHXG
           ======
            XLLXH

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