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