C11112331312111112111133133313331333133313123313331311331333132313211311   >>    C1111233131211111211113313331333133313331312331333131133133313231321131   <<    C11112331312111112111133133313331333133313123313331311331333132313211313   >>      C11112331312111112111133133313331333133313123313331311331333132313211312   >>