????????
      +---------
FLYNL | FTYPYJNJ
       -FLYNL
        =====
         LMLPJ
        -FLYNL
         =====
          PJLFN
         -GNPTF
          =====
           GTPXJ
          -NJPPY
           =====
           ?????

base: 11
letters: FGJLMNPQTXY
difficulty: intermediate
missing: Q