C1231321123223331211111131211113313331333132313332223312132221212121   >>    C123132112322333121111113121111331333133313231333222331213222121212   <<    C1231321123223331211111131211113313331333132313332223312132221212123   >>      C1231321123223331211111131211113313331333132313332223312132221212122   >>