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