[ num ] sp capword sp othword sp capword sp capword sp ( othword sp num sp othword ) sp / sp capword . sp othword sp capword sp capword sp capword , sp capword othword sp capword . sp – – sp capword sp othword sp upword sp capword , sp year . sp – – sp upword : sp year - num - num - num . sp – – sp upword : sp othword : / / othword . othword . othword / othword / num / othword - othword - othword - othword .