C123132112322333121111113121111331333133313231333133311223323211222121321231   >>    C12313211232233312111111312111133133313331323133313331122332321122212132123   <<    C123132112322333121111113121111331333133313231333133311223323211222121321233   >>      C123132112322333121111113121111331333133313231333133311223323211222121321232   >>