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