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