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