C11112331312111112111133133313331333132323213331313331311331312111   >>    C1111233131211111211113313331333133313232321333131333131133131211   <<    C11112331312111112111133133313331333132323213331313331311331312113   >>      C11112331312111112111133133313331333132323213331313331311331312112   >>