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