C1231321123223331211111131211113313331333132313332323232212321211   >>    C123132112322333121111113121111331333133313231333232323221232121   <<    C1231321123223331211111131211113313331333132313332323232212321213   >>      C1231321123223331211111131211113313331333132313332323232212321212   >>