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