QFP
      +--------
NFTPL | LWXPRJW
       -LQTHW
        =====
         HULTJ
        -FJTWH
         =====
         NNMFFW
        -NYQPRW
         ======
          NNHXY

base: 15
letters: FGHJLMNPQRTUWXY
difficulty: hard
hints: H << J, T = E, F << G
missing: G