C11112331312111112111133133313331333132323213331333131133212321   >>    C1111233131211111211113313331333133313232321333133313113321232   <<    C11112331312111112111133133313331333132323213331333131133212323   >>      C11112331312111112111133133313331333132323213331333131133212322   >>