PYWW
      +---------
EHFRL | QPEMRPHY
       -YMMRH
        =====
        EEFCHP
       -EERQLW
        ======
          HRYEH
         -GHWLY
          =====
           HMELY
          -GHWLY
           =====
            HQCC

base: 12
letters: CEFGHLMPQRWY
difficulty: intermediate
restrictions: no multiplication