????????
      +---------
HPWJN | LRNJGEEF
       -RYEPF
        =====
        HPJLPE
       -PLYHEY
        ======
         PNYRYE
        -PNPRHG
         ======
           GJNRF
          -NEYJR
           =====
           ?????

base: 11
letters: EFGHJLNPRWY
difficulty: medium