C11112331312111112111133133313331333133313331333133313331333131133131132131231   >>    C1111233131211111211113313331333133313331333133313331333133313113313113213123   <<    C11112331312111112111133133313331333133313331333133313331333131133131132131233   >>      C11112331312111112111133133313331333133313331333133313331333131133131132131232   >>