C11112331312111112111133133313331333133313223223313121111332112312131   >>    C1111233131211111211113313331333133313331322322331312111133211231213   <<    C11112331312111112111133133313331333133313223223313121111332112312133   >>      C11112331312111112111133133313331333133313223223313121111332112312132   >>