C1231321123223331211111131211113313331333132313332323232222112121   >>    C123132112322333121111113121111331333133313231333232323222211212   <<    C1231321123223331211111131211113313331333132313332323232222112123   >>      C1231321123223331211111131211113313331333132313332323232222112122   >>