C11112331312111112111133133313331333132323213311331323131312311   >>    C1111233131211111211113313331333133313232321331133132313131231   <<    C11112331312111112111133133313331333132323213311331323131312313   >>      C11112331312111112111133133313331333132323213311331323131312312   >>