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