English verb conjugation
SHOULD BIRL

Regular verb: birl - birled - birled

Affirmation

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

Negation

Simple form	V-ing form
I should not birl you should not birl he should not birl we should not birl you should not birl they should not birl	I should not be birling you should not be birling he should not be birling we should not be birling you should not be birling they should not be birling
Perfect	V-ing perfect
I should not have birled you should not have birled he should not have birled we should not have birled you should not have birled they should not have birled	I should not have been birling you should not have been birling he should not have been birling we should not have been birling you should not have been birling they should not have been birling

Interrogative form

Simple form	V-ing form
should I birl? should you birl? should he birl? should we birl? should you birl? should they birl?	should I be birling? should you be birling? should he 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 he 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 he 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
should I not birl? should you not birl? should he not birl? should we not birl? should you not birl? should they not birl?	should I not be birling? should you not be birling? should he not be birling? should we not be birling? should you not be birling? should they not be birling?
Perfect	V-ing perfect
should I not have birled? should you not have birled? should he not have birled? should we not have birled? should you not have birled? should they not have birled?	should I not have been birling? should you not have been birling? should he not have been birling? should we not have been birling? should you not have been birling? should they not have been birling?