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