C11112331312111112111133133313331333132323213331313331311331223221   >>    C1111233131211111211113313331333133313232321333131333131133122322   <<    C11112331312111112111133133313331333132323213331313331311331223223   >>      C11112331312111112111133133313331333132323213331313331311331223222   >>