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