????????
      +---------
GNHMG | HTPHGYYM
       -MCMLM
        =====
         LCXUY
        -LUHLL
         =====
          WXHLY
         -WLHTW
          =====
           TNTUM
          -GNHMG
           =====
           ?????

base: 12
letters: CGHLMNPTUWXY
difficulty: medium