??????
     --------
QMRQ ) TLPRGM
      -WLGP
       ====
       QXQTG
      - LJWM
       =====
        QTXJM
       -QPTML
        =====
        ?????

base: 11
symbols: CGJLMPQRTWX
difficulty: hard
hints: M << J
missing: C