????????
      ----------
LXFQJ ) ECJLRQCE
       -ERJFC
        =====
         EQRJQ
        -ERJFC
         =====
          JJFRC
         -JAECF
          =====
           LEAQE
          -LXFQJ
           =====
           ?????

base: 9
symbols: ACEFJLQRX
difficulty: medium