C3123223313331322121111331333133313331333121211111211111223311111   >>    C312322331333132212111133133313331333133312121111121111122331111   <<    C3123223313331322121111331333133313331333121211111211111223311113   >>      C3123223313331322121111331333133313331333121211111211111223311112   >>