C1111233131211111211113313331333133313232313331333133313331233131232311   >>    C111123313121111121111331333133313331323231333133313331333123313123231   <<    C1111233131211111211113313331333133313232313331333133313331233131232313   >>      C1111233131211111211113313331333133313232313331333133313331233131232312   >>