C31231211111133131211113313331312111113331311331322331333131121223311   >>    C3123121111113313121111331333131211111333131133132233133313112122331   <<    C31231211111133131211113313331312111113331311331322331333131121223313   >>      C31231211111133131211113313331312111113331311331322331333131121223312   >>