C11112331312111112111133133313331333133313331333133313331333131121232311111   >>    C1111233131211111211113313331333133313331333133313331333133313112123231111   <<    C11112331312111112111133133313331333133313331333133313331333131121232311113   >>      C11112331312111112111133133313331333133313331333133313331333131121232311112   >>