English verb conjugation
SHOULD BIRL

Regular verb: birl - birled - birled

Affirmation

Simple form	V-ing form
I'd birl you'd birl she'd birl we'd birl you'd birl they'd birl	I'd be birling you'd be birling she'd be birling we'd be birling you'd be birling they'd be birling
Perfect	V-ing perfect
I should've birled you should've birled she should've birled we should've birled you should've birled they should've birled	I should've been birling you should've been birling she should've been birling we should've been birling you should've been birling they should've been birling

Negation

Simple form	V-ing form
I shouldn't birl you shouldn't birl she shouldn't birl we shouldn't birl you shouldn't birl they shouldn't birl	I shouldn't be birling you shouldn't be birling she shouldn't be birling we shouldn't be birling you shouldn't be birling they shouldn't be birling
Perfect	V-ing perfect
I shouldn't have birled you shouldn't have birled she shouldn't have birled we shouldn't have birled you shouldn't have birled they shouldn't have birled	I shouldn't have been birling you shouldn't have been birling she shouldn't have been birling we shouldn't have been birling you shouldn't have been birling they shouldn't have been birling

Interrogative form

Simple form	V-ing form
should I birl? should you birl? should she birl? should we birl? should you birl? should they birl?	should I be birling? should you be birling? should she be birling? should we be birling? should you be birling? should they be birling?
Perfect	V-ing perfect
should I have birled? should you have birled? should she have birled? should we have birled? should you have birled? should they have birled?	should I have been birling? should you have been birling? should she have been birling? should we have been birling? should you have been birling? should they have been birling?

Interro-negative form

Simple form	V-ing form
shouldn't I birl? shouldn't you birl? shouldn't she birl? shouldn't we birl? shouldn't you birl? shouldn't they birl?	shouldn't I be birling? shouldn't you be birling? shouldn't she be birling? shouldn't we be birling? shouldn't you be birling? shouldn't they be birling?
Perfect	V-ing perfect
shouldn't I have birled? shouldn't you have birled? shouldn't she have birled? shouldn't we have birled? shouldn't you have birled? shouldn't they have birled?	shouldn't I have been birling? shouldn't you have been birling? shouldn't she have been birling? shouldn't we have been birling? shouldn't you have been birling? shouldn't they have been birling?