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