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