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