C11112331312111112111133133313331333133313331333133313331333131121232311311   >>    C1111233131211111211113313331333133313331333133313331333133313112123231131   <<    C11112331312111112111133133313331333133313331333133313331333131121232311313   >>      C11112331312111112111133133313331333133313331333133313331333131121232311312   >>