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