????????
      ----------
TRTMR ) RUMPQPXN
       -RXXLTM
        ======
         RUMWLX
        -RXXLTM
         ======
          RUPXRN
         -RXXLTM
          ======
          ??????

base: 11
symbols: LMNPQRTUWXY
missing: Y
difficulty: hard
hints: M << X, P < M, R << W, Y