C11112331312111112111133133313331333133313123313331312111113331333132312111211   >>    C1111233131211111211113313331333133313331312331333131211111333133313231211121   <<    C11112331312111112111133133313331333133313123313331312111113331333132312111213   >>      C11112331312111112111133133313331333133313123313331312111113331333132312111212   >>