[ num ] sp capword , sp capword . sp capword sp othword sp othword : sp capword sp othword sp othword sp othword sp othword sp othword sp othword sp othword othword . sp ( capword othword sp othword sp smallet othword othword : sp capword sp othword sp othword sp othword sp othword sp othword sp smallet othword othword sp othword sp othword othword othword ) sp [ capword ] sp : sp capword . sp caplet . sp othword sp / sp capword sp capword sp ; sp capword sp othword sp capword - capword , sp capword . sp — sp [ caplet . sp smallet . sp : smallet . sp smallet . ] , sp year . sp — sp upword : sp othword : / / othword . othword - othword . othword / othword - year .