????????
      +---------
CXLCC | HXHNMLPX
       -YMHLL
        =====
        CCJYNL
       -CJNCNN
        ======
          HCXPP
         -YMHLL
          =====
           YHHHX
          -CXLCC
           =====
           ?????

base: 9
letters: CHJLMNPXY
difficulty: easy