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