[ capword sp & sp capword ( ) ] sp capword , sp caplet . sp caplet . sp & sp capword , sp caplet . sp ( ) . sp capword sp othword sp othword sp othword othword sp othword sp othword sp othword sp othword sp othword sp othword . sp upword sp othword , sp othword sp othword sp upword sp othword . capword sp othword sp othword sp othword sp ( othword sp upword sp othword ) .