C312312111111331312111133133313331333133313232233133313331333133313333122311   >>    C31231211111133131211113313331333133313331323223313331333133313331333312231   <<    C312312111111331312111133133313331333133313232233133313331333133313333122313   >>      C312312111111331312111133133313331333133313232233133313331333133313333122312   >>