????????
      +---------
YLWXH | WRLPEJGY
       -YLWXH
        =====
        YLWETJ
       -YWNEQJ
        ======
         YLQTQG
        -YWNEQJ
         ======
          YWJQXY
         -YYJQRY
          ======
          ??????

base: 13
letters: EGHJLNPQRTWXY
difficulty: hard