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