LGH
      +---------
YEELM | PHJUGLNY
       -PJELEM
        ======
         GJHUXN
        -MHEENR
         ======
          XHXUNY
         -XGEYGL
          ======
           JXXLN

base: 12
letters: EGHJLMNPRUXY
difficulty: medium
restrictions: no multiplication