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