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