C11112331312111112111133133313331333133313123313331311331333213221   >>    C1111233131211111211113313331333133313331312331333131133133321322   <<    C11112331312111112111133133313331333133313123313331311331333213223   >>      C11112331312111112111133133313331333133313123313331311331333213222   >>