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