C11112331312111112111133133313331333133313223223313121111331323113313232223131   >>    C1111233131211111211113313331333133313331322322331312111133132311331323222313   <<    C11112331312111112111133133313331333133313223223313121111331323113313232223133   >>      C11112331312111112111133133313331333133313223223313121111331323113313232223132   >>