C11112331312111112111133133313331333133313331333133313331211113322333121   >>    C1111233131211111211113313331333133313331333133313331333121111332233312   <<    C11112331312111112111133133313331333133313331333133313331211113322333123   >>      C11112331312111112111133133313331333133313331333133313331211113322333122   >>