C11112331312111112111133133313331333133313223223313121111331333122231311   >>    C1111233131211111211113313331333133313331322322331312111133133312223131   <<    C11112331312111112111133133313331333133313223223313121111331333122231313   >>      C11112331312111112111133133313331333133313223223313121111331333122231312   >>