C11112331312111112111133133313331333133313223223313121111113313131   >>    C1111233131211111211113313331333133313331322322331312111111331313   <<    C11112331312111112111133133313331333133313223223313121111113313133   >>      C11112331312111112111133133313331333133313223223313121111113313132   >>