Present participle; Past participle - preening - preened Present - preen - preen - preens - preen - preen - preen Past - preened - preened - preened - preened - preened - preened Future - will preen - will preen - will preen - will preen - will preen - will preen Present conditional - would preen - would preen - would preen - would preen - would preen - would preen Present Perfect - have preened - have preened - has preened - have preened - have preened - have preened Past Perfect - had preened - had preened - had preened - had preened - had preened - had preened Future Perfect - will have preened - will have preened - will have preened - will have preened - will have preened - will have preened Past conditional - would have preened - would have preened - would have preened - would have preened - would have preened - would have preened Imperative - - - preen - - - - - - - -