??????
     +-------
JJTT | NJMQXA
      -MMJJ
       ====
        XJMX
       -QQYY
        ====
        TQTNA
       -TNMWW
        =====
        ?????

base: 10
letters: AGJMNQTWXY
difficulty: medium
hints: Q << W, W << A
missing: G