C11112331312111112111133133313331333132323213331333133313232323131232131211   >>    C1111233131211111211113313331333133313232321333133313331323232313123213121   <<    C11112331312111112111133133313331333132323213331333133313232323131232131213   >>      C11112331312111112111133133313331333132323213331333133313232323131232131212   >>