RJNH
    +-------
UUP | RNPMYN
     -RWX
      ===
       YQM
      -JTM
       ===
        PLY
       -MLN
        ===
         GFN
        -GXT
         ===
          JU

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