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