should slack
Regular verb: slack - slacked- slacked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd slack
you'd slack
he'd slack
we'd slack
you'd slack
they'd slack 	I'd be slacking
you'd be slacking
he'd be slacking
we'd be slacking
you'd be slacking
they'd be slacking	I should've slacked
you should've slacked
he should've slacked
we should've slacked
you should've slacked
they should've slacked	I should've been slacking
you should've been slacking
he should've been slacking
we should've been slacking
you should've been slacking
they should've been slacking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't slack
you shouldn't slack
he shouldn't slack
we shouldn't slack
you shouldn't slack
they shouldn't slack 	I shouldn't be slacking
you shouldn't be slacking
he shouldn't be slacking
we shouldn't be slacking
you shouldn't be slacking
they shouldn't be slacking	I shouldn't have slacked
you shouldn't have slacked
he shouldn't have slacked
we shouldn't have slacked
you shouldn't have slacked
they shouldn't have slacked	I shouldn't have been slacking
you shouldn't have been slacking
he shouldn't have been slacking
we shouldn't have been slacking
you shouldn't have been slacking
they shouldn't have been slacking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I slack?
should you slack?
should he slack?
should we slack?
should you slack?
should they slack? 	should I be slacking?
should you be slacking?
should he be slacking?
should we be slacking?
should you be slacking?
should they be slacking? 	should I have slacked?
should you have slacked?
should he have slacked?
should we have slacked?
should you have slacked?
should they have slacked? 	should I have been slacking?
should you have been slacking?
should he have been slacking?
should we have been slacking?
should you have been slacking?
should they have been slacking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I slack?
shouldn't you slack?
shouldn't he slack?
shouldn't we slack?
shouldn't you slack?
shouldn't they slack? 	shouldn't I be slacking?
shouldn't you be slacking?
shouldn't he be slacking?
shouldn't we be slacking?
shouldn't you be slacking?
shouldn't they be slacking? 	shouldn't I have slacked?
shouldn't you have slacked?
shouldn't he have slacked?
shouldn't we have slacked?
shouldn't you have slacked?
shouldn't they have slacked? 	shouldn't I have been slacking?
shouldn't you have been slacking?
shouldn't he have been slacking?
shouldn't we have been slacking?
shouldn't you have been slacking?
shouldn't they have been slacking?