C1231321123223331211111131211113313331333132313332323232211222132311   >>    C123132112322333121111113121111331333133313231333232323221122213231   <<    C1231321123223331211111131211113313331333132313332323232211222132313   >>      C1231321123223331211111131211113313331333132313332323232211222132312   >>