should propagate
Regular verb: propagate - propagated- propagated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd propagate
you'd propagate
he'd propagate
we'd propagate
you'd propagate
they'd propagate 	I'd be propagating
you'd be propagating
he'd be propagating
we'd be propagating
you'd be propagating
they'd be propagating	I should've propagated
you should've propagated
he should've propagated
we should've propagated
you should've propagated
they should've propagated	I should've been propagating
you should've been propagating
he should've been propagating
we should've been propagating
you should've been propagating
they should've been propagating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't propagate
you shouldn't propagate
he shouldn't propagate
we shouldn't propagate
you shouldn't propagate
they shouldn't propagate 	I shouldn't be propagating
you shouldn't be propagating
he shouldn't be propagating
we shouldn't be propagating
you shouldn't be propagating
they shouldn't be propagating	I shouldn't have propagated
you shouldn't have propagated
he shouldn't have propagated
we shouldn't have propagated
you shouldn't have propagated
they shouldn't have propagated	I shouldn't have been propagating
you shouldn't have been propagating
he shouldn't have been propagating
we shouldn't have been propagating
you shouldn't have been propagating
they shouldn't have been propagating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I propagate?
should you propagate?
should he propagate?
should we propagate?
should you propagate?
should they propagate? 	should I be propagating?
should you be propagating?
should he be propagating?
should we be propagating?
should you be propagating?
should they be propagating? 	should I have propagated?
should you have propagated?
should he have propagated?
should we have propagated?
should you have propagated?
should they have propagated? 	should I have been propagating?
should you have been propagating?
should he have been propagating?
should we have been propagating?
should you have been propagating?
should they have been propagating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I propagate?
shouldn't you propagate?
shouldn't he propagate?
shouldn't we propagate?
shouldn't you propagate?
shouldn't they propagate? 	shouldn't I be propagating?
shouldn't you be propagating?
shouldn't he be propagating?
shouldn't we be propagating?
shouldn't you be propagating?
shouldn't they be propagating? 	shouldn't I have propagated?
shouldn't you have propagated?
shouldn't he have propagated?
shouldn't we have propagated?
shouldn't you have propagated?
shouldn't they have propagated? 	shouldn't I have been propagating?
shouldn't you have been propagating?
shouldn't he have been propagating?
shouldn't we have been propagating?
shouldn't you have been propagating?
shouldn't they have been propagating?