C123132112322333121111113121111331333133313231333222331213223123311   >>    C12313211232233312111111312111133133313331323133322233121322312331   <<    C123132112322333121111113121111331333133313231333222331213223123313   >>      C123132112322333121111113121111331333133313231333222331213223123312   >>