C123132112322333121111113121111331333133313231333112331113223121121   >>    C12313211232233312111111312111133133313331323133311233111322312112   <<    C123132112322333121111113121111331333133313231333112331113223121123   >>      C123132112322333121111113121111331333133313231333112331113223121122   >>