????????
      +---------
NLMPN | WTXRQPJL
       -FPTFU
        =====
         LYUPP
        -PTRNT
         =====
         YUFWQJ
        -YMUWPG
         ======
          QGRUJL
         -YHNNNU
          ======
          ??????

base: 15
letters: FGHJLMNPQRTUWXY
difficulty: hard
hints: J << P