Present participle; Past participle - killing - killed Present - kill - kill - kills - kill - kill - kill Past - killed - killed - killed - killed - killed - killed Future - will kill - will kill - will kill - will kill - will kill - will kill Present conditional - would kill - would kill - would kill - would kill - would kill - would kill Present Perfect - have killed - have killed - has killed - have killed - have killed - have killed Past Perfect - had killed - had killed - had killed - had killed - had killed - had killed Future Perfect - will have killed - will have killed - will have killed - will have killed - will have killed - will have killed Past conditional - would have killed - would have killed - would have killed - would have killed - would have killed - would have killed Imperative - - - kill - - - - - - - -