????????
      +---------
YYHLC | GPEYGYYW
       -PGPUM
        =====
         WGLCY
        -MPEGT
         =====
         YFMYLY
        -YFCTFH
         ======
           LLGEW
          -GLMYG
           =====
           ?????

base: 12
letters: CEFGHLMPTUWY
difficulty: medium