C11112331312111112111133133313331333133313331333133313331211113313223132333131   >>    C1111233131211111211113313331333133313331333133313331333121111331322313233313   <<    C11112331312111112111133133313331333133313331333133313331211113313223132333133   >>      C11112331312111112111133133313331333133313331333133313331211113313223132333132   >>