C123132112322333121111113121111331333133313231333133311223323212122212112121   >>    C12313211232233312111111312111133133313331323133313331122332321212221211212   <<    C123132112322333121111113121111331333133313231333133311223323212122212112123   >>      C123132112322333121111113121111331333133313231333133311223323212122212112122   >>