C11112331312111112111133133313331333132323213331333131121212111   >>    C1111233131211111211113313331333133313232321333133313112121211   <<    C11112331312111112111133133313331333132323213331333131121212113   >>      C11112331312111112111133133313331333132323213331333131121212112   >>