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