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