C123132112322333121111113121111331333133313231333133311223323211221312321121   >>    C12313211232233312111111312111133133313331323133313331122332321122131232112   <<    C123132112322333121111113121111331333133313231333133311223323211221312321123   >>      C123132112322333121111113121111331333133313231333133311223323211221312321122   >>