C11112331312111112111133133313331333132323213311211111333131133211   >>    C1111233131211111211113313331333133313232321331121111133313113321   <<    C11112331312111112111133133313331333132323213311211111333131133213   >>      C11112331312111112111133133313331333132323213311211111333131133212   >>