C11112331312111112111133133313331333132323213331333133313111223221   >>    C1111233131211111211113313331333133313232321333133313331311122322   <<    C11112331312111112111133133313331333132323213331333133313111223223   >>      C11112331312111112111133133313331333132323213331333133313111223222   >>