C3123121111121111131213331333133313331333133313332112323132333132221212131   >>    C312312111112111113121333133313331333133313331333211232313233313222121213   <<    C3123121111121111131213331333133313331333133313332112323132333132221212133   >>      C3123121111121111131213331333133313331333133313332112323132333132221212132   >>