C11112331312111112111133133313331333132323133313331333133313123121323221   >>    C1111233131211111211113313331333133313232313331333133313331312312132322   <<    C11112331312111112111133133313331333132323133313331333133313123121323223   >>      C11112331312111112111133133313331333132323133313331333133313123121323222   >>