????????
      +---------
LPXNT | GMGLLMML
       -MNXEPT
        ======
         LLLEMM
        -LTLWLT
         ======
          LTTXML
         -CRENRT
          ======
          ??????

base: 11
letters: CEGLMNPRTWX
difficulty: hard
hints: R << L, X << P, N << C