C11112331312111112111133133313331333133313223223313121111331323113223323321   >>    C1111233131211111211113313331333133313331322322331312111133132311322332332   <<    C11112331312111112111133133313331333133313223223313121111331323113223323323   >>      C11112331312111112111133133313331333133313223223313121111331323113223323322   >>