??????
    --------
YJF ) CPFXYL
     -FYQ
      ===
      YURX
     -LQRR
      ====
        QCY
       -CFX
        ===
        LLFL
       -LLLY
        ====
        ????

base: 11
symbols: CFGJLPQRUXY
difficulty: hard
missing: G