GHR
      +---------
CEYHQ | GMNMNEGQ
       -MQEMCH
        ======
         HNEGYG
        -GYCCGN
         ======
          RNRHGQ
         -HRCHYQ
          ======
           RYEQN

base: 9
letters: CEGHMNQRY
difficulty: easy
restrictions: no multiplication