C31231211113313121211113313331333133313331213331312111112323223313232311   >>    C3123121111331312121111331333133313331333121333131211111232322331323231   <<    C31231211113313121211113313331333133313331213331312111112323223313232313   >>      C31231211113313121211113313331333133313331213331312111112323223313232312   >>