C1231321123223331211111131211113313331333132313332323232211222121211   >>    C123132112322333121111113121111331333133313231333232323221122212121   <<    C1231321123223331211111131211113313331333132313332323232211222121213   >>      C1231321123223331211111131211113313331333132313332323232211222121212   >>