????????
      +---------
CFCHW | QFGWQNTW
       -QJNUWW
        ======
         JQHQNT
        -JYHWWW
         ======
          GWQNTW
         - CFCHW
          ======
          ??????

base: 12
letters: CEFGHJNQTUWY
missing: E
difficulty: medium