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