C3123121111121111131213331333133313331333133313332112323132333133313222211211   >>    C312312111112111113121333133313331333133313331333211232313233313331322221121   <<    C3123121111121111131213331333133313331333133313332112323132333133313222211213   >>      C3123121111121111131213331333133313331333133313332112323132333133313222211212   >>