???????
     +--------
XTTR | TURYFUF
      -NXXM
       ====
       PPGXF
      - RJNG
       =====
        XXFPU
       -XPJGX
        =====
         PUNPF
        -PXYPT
         =====
         ?????

base: 11
letters: FGJMNPRTUXY
difficulty: medium