CRXR
    +-------
PGR | GXJXYG
     -YTG
      ===
      PYEX
     -PEWY
      ====
       PGTY
      -PYCE
       ====
        PCEG
       -PEWY
        ====
          GP

base: 11
letters: CEGJPQRTWXY
difficulty: medium
missing: Q