Present participle; Past participle - massacring - massacred Present - massacre - massacre - massacres - massacre - massacre - massacre Past - massacred - massacred - massacred - massacred - massacred - massacred Future - will massacre - will massacre - will massacre - will massacre - will massacre - will massacre Present conditional - would massacre - would massacre - would massacre - would massacre - would massacre - would massacre Present Perfect - have massacred - have massacred - has massacred - have massacred - have massacred - have massacred Past Perfect - had massacred - had massacred - had massacred - had massacred - had massacred - had massacred Future Perfect - will have massacred - will have massacred - will have massacred - will have massacred - will have massacred - will have massacred Past conditional - would have massacred - would have massacred - would have massacred - would have massacred - would have massacred - would have massacred Imperative - - - massacre - - - - - - - -