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