C1231321123223331211111131211113313331333133311233131131121331321333111   >>    C123132112322333121111113121111331333133313331123313113112133132133311   <<    C1231321123223331211111131211113313331333133311233131131121331321333113   >>      C1231321123223331211111131211113313331333133311233131131121331321333112   >>