C11112331312111112111133133313331333133313123313331333131311223311   >>    C1111233131211111211113313331333133313331312331333133313131122331   <<    C11112331312111112111133133313331333133313123313331333131311223313   >>      C11112331312111112111133133313331333133313123313331333131311223312   >>