C11112331312111112111133133313331333133313331333133313331211111333111   >>    C1111233131211111211113313331333133313331333133313331333121111133311   <<    C11112331312111112111133133313331333133313331333133313331211111333113   >>      C11112331312111112111133133313331333133313331333133313331211111333112   >>