????????
      +---------
RXEEE | EEJXCCRE
       -EPEEX
        =====
         CJXEC
        -RXEEE
         =====
          PXEXR
         -WCEET
          =====
          RJEXWE
         - EPEEX
          ======
          ??????

base: 9
letters: CEJPRTUWX
missing: U
difficulty: medium