C11112331312111112111133133313331333133313223223313121111331323213311   >>    C1111233131211111211113313331333133313331322322331312111133132321331   <<    C11112331312111112111133133313331333133313223223313121111331323213313   >>      C11112331312111112111133133313331333133313223223313121111331323213312   >>