C11112331312111112111133133313331333133313123313331311331322333122131   >>    C1111233131211111211113313331333133313331312331333131133132233312213   <<    C11112331312111112111133133313331333133313123313331311331322333122133   >>      C11112331312111112111133133313331333133313123313331311331322333122132   >>