C31231211111133131211113313331333132233131211111211113313223313113313232221   >>    C3123121111113313121111331333133313223313121111121111331322331311331323222   <<    C31231211111133131211113313331333132233131211111211113313223313113313232223   >>      C31231211111133131211113313331333132233131211111211113313223313113313232222   >>