C31231211111133131211113313231333133313331333133313133313331311331323223311   >>    C3123121111113313121111331323133313331333133313331313331333131133132322331   <<    C31231211111133131211113313231333133313331333133313133313331311331323223313   >>      C31231211111133131211113313231333133313331333133313133313331311331323223312   >>