Present participle; Past participle - exchanging - exchanged Present - exchange - exchange - exchanges - exchange - exchange - exchange Past - exchanged - exchanged - exchanged - exchanged - exchanged - exchanged Future - will exchange - will exchange - will exchange - will exchange - will exchange - will exchange Present conditional - would exchange - would exchange - would exchange - would exchange - would exchange - would exchange Present Perfect - have exchanged - have exchanged - has exchanged - have exchanged - have exchanged - have exchanged Past Perfect - had exchanged - had exchanged - had exchanged - had exchanged - had exchanged - had exchanged Future Perfect - will have exchanged - will have exchanged - will have exchanged - will have exchanged - will have exchanged - will have exchanged Past conditional - would have exchanged - would have exchanged - would have exchanged - would have exchanged - would have exchanged - would have exchanged Imperative - - - exchange - - - - - - - -