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