could massacre
Regular verb: massacre - massacred- massacred

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could massacre
you could massacre
he could massacre
we could massacre
you could massacre
they could massacre 	I could be massacring
you could be massacring
he could be massacring
we could be massacring
you could be massacring
they could be massacring	I could have massacred
you could have massacred
he could have massacred
we could have massacred
you could have massacred
they could have massacred	I could have been massacring
you could have been massacring
he could have been massacring
we could have been massacring
you could have been massacring
they could have been massacring	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not massacre
you could not massacre
he could not massacre
we could not massacre
you could not massacre
they could not massacre 	I could not be massacring
you could not be massacring
he could not be massacring
we could not be massacring
you could not be massacring
they could not be massacring	I could not have massacred
you could not have massacred
he could not have massacred
we could not have massacred
you could not have massacred
they could not have massacred	I could not have been massacring
you could not have been massacring
he could not have been massacring
we could not have been massacring
you could not have been massacring
they could not have been massacring	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I massacre?
could you massacre?
could he massacre?
could we massacre?
could you massacre?
could they massacre? 	could I be massacring?
could you be massacring?
could he be massacring?
could we be massacring?
could you be massacring?
could they be massacring? 	could I have massacred?
could you have massacred?
could he have massacred?
could we have massacred?
could you have massacred?
could they have massacred? 	could I have been massacring?
could you have been massacring?
could he have been massacring?
could we have been massacring?
could you have been massacring?
could they have been massacring? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not massacre?
could you not massacre?
could he not massacre?
could we not massacre?
could you not massacre?
could they not massacre? 	could I not be massacring?
could you not be massacring?
could he not be massacring?
could we not be massacring?
could you not be massacring?
could they not be massacring? 	could I not have massacred?
could you not have massacred?
could he not have massacred?
could we not have massacred?
could you not have massacred?
could they not have massacred? 	could I not have been massacring?
could you not have been massacring?
could he not have been massacring?
could we not have been massacring?
could you not have been massacring?
could they not have been massacring?