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