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