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