???????
     ---------
XLQR ) CCLLLQR
      -FQCQ
       ====
       NQPPL
      -NPPXL
       =====
        XMLMQ
       -NRMNX
        =====
         NXRPR
        -NMCFP
         =====
         ?????

base: 9
symbols: CFLMNPQRX
difficulty: medium