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