C11112331312111112111133133313331333133313331333133313331211113322121   >>    C1111233131211111211113313331333133313331333133313331333121111332212   <<    C11112331312111112111133133313331333133313331333133313331211113322123   >>      C11112331312111112111133133313331333133313331333133313331211113322122   >>