Present participle; Past participle - perceiving - perceived Present - perceive - perceive - perceives - perceive - perceive - perceive Past - perceived - perceived - perceived - perceived - perceived - perceived Future - will perceive - will perceive - will perceive - will perceive - will perceive - will perceive Present conditional - would perceive - would perceive - would perceive - would perceive - would perceive - would perceive Present Perfect - have perceived - have perceived - has perceived - have perceived - have perceived - have perceived Past Perfect - had perceived - had perceived - had perceived - had perceived - had perceived - had perceived Future Perfect - will have perceived - will have perceived - will have perceived - will have perceived - will have perceived - will have perceived Past conditional - would have perceived - would have perceived - would have perceived - would have perceived - would have perceived - would have perceived Imperative - - - perceive - - - - - - - -