CCUN
      ----------
CNULN ) PLUUCTGC
       -NLPUC
        =====
        XTXTTT
       - NLPUC
        ======
         CNXTPG
        -CLXGXL
         ======
          XUGNXC
         -XNNNCX
          ======
           XPUUX

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