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