RWW
      +---------
LPQYY | HRUYFLTT
       -HPYMYJ
        ======
         EMTLPT
        -ERULYF
         ======
          HPYPWT
         -ERULYF
          ======
           LQWWW

base: 13
letters: EFHJLMPQRTUWY
difficulty: hard