????????
      ----------
LWPJN ) QLRQPJTW
       -QPNNPL
        ======
         JRQNWT
        -PNPTQT
         ======
          RNJRUW
         -RRWQYJ
          ======
          ??????

base: 11
symbols: JLNPQRTUWXY
missing: X
difficulty: hard