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