C11112331312111112111133133313331333132323213331333133313223313232213221   >>    C1111233131211111211113313331333133313232321333133313331322331323221322   <<    C11112331312111112111133133313331333132323213331333133313223313232213223   >>      C11112331312111112111133133313331333132323213331333133313223313232213222   >>