????????
      +---------
NEEPU | WUYCUPPC
       -WEEYN
        =====
         UXUXP
        -WEEYN
         =====
         CXWRLP
        -CXECPP
         ======
           WGGEC
          -WEEYN
           =====
           ?????

base: 11
letters: CEGLNPRUWXY
difficulty: medium
hints: P << L