C11112331312111112111133133313331333133313331333133313331333131133131232213221   >>    C1111233131211111211113313331333133313331333133313331333133313113313123221322   <<    C11112331312111112111133133313331333133313331333133313331333131133131232213223   >>      C11112331312111112111133133313331333133313331333133313331333131133131232213222   >>