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