JNC
      +---------
FFLFA | CMATNFMM
       - WWNAT
        ======
         FMWMAM
        -FMMNFJ
         ======
           TCFAM
          -FFLFA
           =====
           CWNFJ

base: 9
letters: ACFJLMNTW
difficulty: intermediate
restrictions: no multiplication