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