????????
      +---------
RJEYJ | CYJPHJXR
       -RJEYJ
        =====
        PERPPJ
       -PYRTPR
        ======
         XWTYEX
        -XTJLEC
         ======
          EJTWTR
         -ECXWRP
          ======
          ??????

base: 11
letters: CEHJLPRTWXY
difficulty: medium