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