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