C11112331312111112111133133313331333132323213331333133313331312322331312121   >>    C1111233131211111211113313331333133313232321333133313331333131232233131212   <<    C11112331312111112111133133313331333132323213331333133313331312322331312123   >>      C11112331312111112111133133313331333132323213331333133313331312322331312122   >>