C11112331312111112111133133313331333133313331333133313331333132233211211   >>    C1111233131211111211113313331333133313331333133313331333133313223321121   <<    C11112331312111112111133133313331333133313331333133313331333132233211213   >>      C11112331312111112111133133313331333133313331333133313331333132233211212   >>