C31231211111133131211113313331333131211111333132233131333133313331322331313311   >>    C3123121111113313121111331333133313121111133313223313133313331333132233131331   <<    C31231211111133131211113313331333131211111333132233131333133313331322331313313   >>      C31231211111133131211113313331333131211111333132233131333133313331322331313312   >>