C123132112322333121111113121111331333133313231333133311223323211222121333131321   >>    C12313211232233312111111312111133133313331323133313331122332321122212133313132   <<    C123132112322333121111113121111331333133313231333133311223323211222121333131323   >>      C123132112322333121111113121111331333133313231333133311223323211222121333131322   >>