C1111233131211111211113313331333133313232313331333133313321113223331   >>    C111123313121111121111331333133313331323231333133313331332111322333   <<    C1111233131211111211113313331333133313232313331333133313321113223333   >>      C1111233131211111211113313331333133313232313331333133313321113223332   >>