English verb conjugation
SHOULD ASSAIL

Regular verb: assail - assailed - assailed

Affirmation

Simple form	V-ing form
I'd assail you'd assail she'd assail we'd assail you'd assail they'd assail	I'd be assailing you'd be assailing she'd be assailing we'd be assailing you'd be assailing they'd be assailing
Perfect	V-ing perfect
I should've assailed you should've assailed she 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 she 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
I shouldn't assail you shouldn't assail she 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 she shouldn't be assailing we shouldn't be assailing you shouldn't be assailing they shouldn't be assailing
Perfect	V-ing perfect
I shouldn't have assailed you shouldn't have assailed she 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 she 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
should I assail? should you assail? should she assail? should we assail? should you assail? should they assail?	should I be assailing? should you be assailing? should she be assailing? should we be assailing? should you be assailing? should they be assailing?
Perfect	V-ing perfect
should I have assailed? should you have assailed? should she 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 she 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
shouldn't I assail? shouldn't you assail? shouldn't she 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 she be assailing? shouldn't we be assailing? shouldn't you be assailing? shouldn't they be assailing?
Perfect	V-ing perfect
shouldn't I have assailed? shouldn't you have assailed? shouldn't she 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 she have been assailing? shouldn't we have been assailing? shouldn't you have been assailing? shouldn't they have been assailing?