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