???????
     +--------
MXGL | ANGJMJA
      -LGTJ
       ====
        LGTM
       -MXGL
        ====
        MXGJJ
       -MNLNN
        =====
         MXMMA
        -MNLNN
         =====
         ?????

base: 9
letters: ACGJLMNTX
difficulty: easy
missing: C