C11112331312111112111133133313331333133313331333133313331333131211332313233311   >>    C1111233131211111211113313331333133313331333133313331333133313121133231323331   <<    C11112331312111112111133133313331333133313331333133313331333131211332313233313   >>      C11112331312111112111133133313331333133313331333133313331333131211332313233312   >>