???????
     +--------
FWWW | CCQFAWA
      -FWWW
       ====
       MMLAA
      -ACWWQ
       =====
        WQFCW
       -WMWWA
        =====
         AAQQA
        - FWWW
         =====
         ?????

base: 9
letters: ACFJLMQWX
missing: J X
difficulty: intermediate
hints: J << F