????????
      +---------
RERNU | MXTJPLEP
       -LNMUM
        =====
        RRWRJL
       -RYPELL
        ======
          WJTYE
         -WLEEX
          =====
           TRTTP
          -GPJRR
           =====
           ?????

base: 13
letters: EGJLMNPRTUWXY
difficulty: medium