C123132112322333121111113121111331333133313231333133311223323211212331123311   >>    C12313211232233312111111312111133133313331323133313331122332321121233112331   <<    C123132112322333121111113121111331333133313231333133311223323211212331123313   >>      C123132112322333121111113121111331333133313231333133311223323211212331123312   >>