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