should assail
Regular verb: assail - assailed- assailed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd assail
you'd assail
he'd assail
we'd assail
you'd assail
they'd assail 	I'd be assailing
you'd be assailing
he'd be assailing
we'd be assailing
you'd be assailing
they'd be assailing	I should've assailed
you should've assailed
he should've assailed
we should've assailed
you should've assailed
they should've assailed	I should've been assailing
you should've been assailing
he should've been assailing
we should've been assailing
you should've been assailing
they should've been assailing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't assail
you shouldn't assail
he shouldn't assail
we shouldn't assail
you shouldn't assail
they shouldn't assail 	I shouldn't be assailing
you shouldn't be assailing
he shouldn't be assailing
we shouldn't be assailing
you shouldn't be assailing
they shouldn't be assailing	I shouldn't have assailed
you shouldn't have assailed
he shouldn't have assailed
we shouldn't have assailed
you shouldn't have assailed
they shouldn't have assailed	I shouldn't have been assailing
you shouldn't have been assailing
he shouldn't have been assailing
we shouldn't have been assailing
you shouldn't have been assailing
they shouldn't have been assailing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I assail?
should you assail?
should he assail?
should we assail?
should you assail?
should they assail? 	should I be assailing?
should you be assailing?
should he be assailing?
should we be assailing?
should you be assailing?
should they be assailing? 	should I have assailed?
should you have assailed?
should he have assailed?
should we have assailed?
should you have assailed?
should they have assailed? 	should I have been assailing?
should you have been assailing?
should he have been assailing?
should we have been assailing?
should you have been assailing?
should they have been assailing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I assail?
shouldn't you assail?
shouldn't he assail?
shouldn't we assail?
shouldn't you assail?
shouldn't they assail? 	shouldn't I be assailing?
shouldn't you be assailing?
shouldn't he be assailing?
shouldn't we be assailing?
shouldn't you be assailing?
shouldn't they be assailing? 	shouldn't I have assailed?
shouldn't you have assailed?
shouldn't he have assailed?
shouldn't we have assailed?
shouldn't you have assailed?
shouldn't they have assailed? 	shouldn't I have been assailing?
shouldn't you have been assailing?
shouldn't he have been assailing?
shouldn't we have been assailing?
shouldn't you have been assailing?
shouldn't they have been assailing?