C11112331312111112111133133313331333133313223223313121111121132311   >>    C1111233131211111211113313331333133313331322322331312111112113231   <<    C11112331312111112111133133313331333133313223223313121111121132313   >>      C11112331312111112111133133313331333133313223223313121111121132312   >>