TFJF
    +-------
LEY | WTMTPG
     -PPT
      ===
      YJUT
     -YFGF
      ====
       TFEP
      -TUTJ
       ====
        YPQG
       -YFGF
        ====
         TYM

base: 13
letters: EFGJLMNPQTUWY
difficulty: hard
missing: N