CCMN
      ----------
CNMGN ) PGMMCXRC
       -NGPMC
        =====
        QXQXXX
       - NGPMC
        ======
         CNQXPR
        -CGQRQG
         ======
          QMRNQC
         -QNNNCQ
          ======
           QPMMQ

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