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