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