Which lines in this excerpt from act i, scene i, of richard iii use foreshadowing?

(-sir robert brakenbury: i beseech your grace to pardon me, and withal
forbear your conference with the noble

(-george plantagenet (duke of clarence): we know thy charge, brakenbury, and will

richard iii (duke of gloucester): we are the queen's abjects, and must obey.
brother, farewell: i will unto the king;
and whatsoever you will employ me in,
were it to call king edward's widow sister,

(-i will perform it to enfranchise you.
meantime, this deep disgrace in brotherhood
touches me deeper than you can

george plantagenet (duke of clarence): i know it neither of us well.

richard iii (duke of gloucester): well, your imprisonment shall not be long;
meantime, have patience.

george plantagenet (duke of clarence): i must perforce. farewell.

(exeunt clarence, brakenbury, and guard)

(-richard iii (duke of gloucester): go, tread the path that thou shalt ne'er return.
simple, plain clarence! i do love thee so,
that i will shortly send thy soul to heaven,
if heaven will take the present at our hands.
but who comes here? the new-deliver'd