???????
     +--------
ALMT | RTLJNLC
      -RNLR
       ====
        JTTN
       -ALMT
        ====
        AALML
       -ANJLN
        =====
         NRJCC
        -NLAML
         =====
         ?????

base: 9
letters: ACEJLMNRT
missing: E
difficulty: intermediate