C11112331312111112111133133313331333132323213331333131211113312121121131   >>    C1111233131211111211113313331333133313232321333133313121111331212112113   <<    C11112331312111112111133133313331333132323213331333131211113312121121133   >>      C11112331312111112111133133313331333132323213331333131211113312121121132   >>