should massacre
Regular verb: massacre - massacred- massacred

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd massacre
you'd massacre
he'd massacre
we'd massacre
you'd massacre
they'd massacre 	I'd be massacring
you'd be massacring
he'd be massacring
we'd be massacring
you'd be massacring
they'd be massacring	I should've massacred
you should've massacred
he should've massacred
we should've massacred
you should've massacred
they should've massacred	I should've been massacring
you should've been massacring
he should've been massacring
we should've been massacring
you should've been massacring
they should've been massacring	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't massacre
you shouldn't massacre
he shouldn't massacre
we shouldn't massacre
you shouldn't massacre
they shouldn't massacre 	I shouldn't be massacring
you shouldn't be massacring
he shouldn't be massacring
we shouldn't be massacring
you shouldn't be massacring
they shouldn't be massacring	I shouldn't have massacred
you shouldn't have massacred
he shouldn't have massacred
we shouldn't have massacred
you shouldn't have massacred
they shouldn't have massacred	I shouldn't have been massacring
you shouldn't have been massacring
he shouldn't have been massacring
we shouldn't have been massacring
you shouldn't have been massacring
they shouldn't have been massacring	

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

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