C312312111111331312111133133313331333121111331333133313331333132233131133121221   >>    C31231211111133131211113313331333133312111133133313331333133313223313113312122   <<    C312312111111331312111133133313331333121111331333133313331333132233131133121223   >>      C312312111111331312111133133313331333121111331333133313331333132233131133121222   >>