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