English verb conjugation
SHOULD NAIL

Regular verb: nail - nailed - nailed

Affirmation

Simple form	V-ing form
I'd nail you'd nail she'd nail we'd nail you'd nail they'd nail	I'd be nailing you'd be nailing she'd be nailing we'd be nailing you'd be nailing they'd be nailing
Perfect	V-ing perfect
I should've nailed you should've nailed she should've nailed we should've nailed you should've nailed they should've nailed	I should've been nailing you should've been nailing she should've been nailing we should've been nailing you should've been nailing they should've been nailing

Negation

Simple form	V-ing form
I shouldn't nail you shouldn't nail she shouldn't nail we shouldn't nail you shouldn't nail they shouldn't nail	I shouldn't be nailing you shouldn't be nailing she shouldn't be nailing we shouldn't be nailing you shouldn't be nailing they shouldn't be nailing
Perfect	V-ing perfect
I shouldn't have nailed you shouldn't have nailed she shouldn't have nailed we shouldn't have nailed you shouldn't have nailed they shouldn't have nailed	I shouldn't have been nailing you shouldn't have been nailing she shouldn't have been nailing we shouldn't have been nailing you shouldn't have been nailing they shouldn't have been nailing

Interrogative form

Simple form	V-ing form
should I nail? should you nail? should she nail? should we nail? should you nail? should they nail?	should I be nailing? should you be nailing? should she be nailing? should we be nailing? should you be nailing? should they be nailing?
Perfect	V-ing perfect
should I have nailed? should you have nailed? should she have nailed? should we have nailed? should you have nailed? should they have nailed?	should I have been nailing? should you have been nailing? should she have been nailing? should we have been nailing? should you have been nailing? should they have been nailing?

Interro-negative form

Simple form	V-ing form
shouldn't I nail? shouldn't you nail? shouldn't she nail? shouldn't we nail? shouldn't you nail? shouldn't they nail?	shouldn't I be nailing? shouldn't you be nailing? shouldn't she be nailing? shouldn't we be nailing? shouldn't you be nailing? shouldn't they be nailing?
Perfect	V-ing perfect
shouldn't I have nailed? shouldn't you have nailed? shouldn't she have nailed? shouldn't we have nailed? shouldn't you have nailed? shouldn't they have nailed?	shouldn't I have been nailing? shouldn't you have been nailing? shouldn't she have been nailing? shouldn't we have been nailing? shouldn't you have been nailing? shouldn't they have been nailing?