CLJ
      +---------
JUPXE | LFFLLJXR
       -LECLJT
        ======
         LCXTEX
        -UFLUJX
         ======
          FQLFPR
         -FTJQRU
          ======
           CCJEE

base: 11
letters: CEFJLPQRTUX
difficulty: medium
restrictions: no multiplication