C11112331312111112111133133313331333133313331333133313331333132323231333121   >>    C1111233131211111211113313331333133313331333133313331333133313232323133312   <<    C11112331312111112111133133313331333133313331333133313331333132323231333123   >>      C11112331312111112111133133313331333133313331333133313331333132323231333122   >>