PLXT
      +---------
YYMEP | HPFTJXXH
       -YYMEP
        =====
        PTMEGX
       -PUGUGL
        ======
          UPGMX
         -NLFUX
          =====
          XLLGJH
         -XNTTNT
          ======
            TPNM

base: 13
letters: EFGHJLMNPTUXY
difficulty: intermediate
restrictions: no multiplication