C3123121111331312121111331333133313331333121333133313331211111311223311221   >>    C312312111133131212111133133313331333133312133313331333121111131122331122   <<    C3123121111331312121111331333133313331333121333133313331211111311223311223   >>      C3123121111331312121111331333133313331333121333133313331211111311223311222   >>