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