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