LTJ
      +--------
GYTGT | JLQNTHJ
       -PNUPU
        =====
        LGGQPH
       -LWMYWG
        ======
         QQNTXJ
        -QQJFGL
         ======
           WLFX

base: 15
letters: FGHJLMNPQRTUWXY
difficulty: hard
missing: R