[ num ] sp capword sp upword , sp capword sp caplet . sp caplet sp capword - capword sp capword sp capword sp othword sp capword sp othword capword sp capword sp capword . sp upword sp capword sp othword sp capword sp capword . sp capword sp capword . capword sp othword : sp othword : / / othword . othword - othword . othword / othword / othword / othword / othword . othword .