C11112331312111112111133133313331333133313223313331312111133133313211   >>    C1111233131211111211113313331333133313331322331333131211113313331321   <<    C11112331312111112111133133313331333133313223313331312111133133313213   >>      C11112331312111112111133133313331333133313223313331312111133133313212   >>