C11112331312111112111133133313331333133313223223313121111332231211   >>    C1111233131211111211113313331333133313331322322331312111133223121   <<    C11112331312111112111133133313331333133313223223313121111332231213   >>      C11112331312111112111133133313331333133313223223313121111332231212   >>