????????
      +---------
QLHEG | GGFPYGWM
       -LFYQH
        =====
        EFYLHG
       -EUTTRQ
        ======
         ETHHLW
        -EMUGWM
         ======
          QLTPPM
         -QQPQLP
          ======
          ??????

base: 13
letters: EFGHLMPQRTUWY
difficulty: medium