English verb conjugation
SHOULD IMPAIR

Regular verb: impair - impaired - impaired

Affirmation

Simple form	V-ing form
I should impair you should impair he should impair we should impair you should impair they should impair	I should be impairing you should be impairing he should be impairing we should be impairing you should be impairing they should be impairing
Perfect	V-ing perfect
I should have impaired you should have impaired he should have impaired we should have impaired you should have impaired they should have impaired	I should have been impairing you should have been impairing he should have been impairing we should have been impairing you should have been impairing they should have been impairing

Negation

Simple form	V-ing form
I should not impair you should not impair he should not impair we should not impair you should not impair they should not impair	I should not be impairing you should not be impairing he should not be impairing we should not be impairing you should not be impairing they should not be impairing
Perfect	V-ing perfect
I should not have impaired you should not have impaired he should not have impaired we should not have impaired you should not have impaired they should not have impaired	I should not have been impairing you should not have been impairing he should not have been impairing we should not have been impairing you should not have been impairing they should not have been impairing

Interrogative form

Simple form	V-ing form
should I impair? should you impair? should he impair? should we impair? should you impair? should they impair?	should I be impairing? should you be impairing? should he be impairing? should we be impairing? should you be impairing? should they be impairing?
Perfect	V-ing perfect
should I have impaired? should you have impaired? should he have impaired? should we have impaired? should you have impaired? should they have impaired?	should I have been impairing? should you have been impairing? should he have been impairing? should we have been impairing? should you have been impairing? should they have been impairing?

Interro-negative form

Simple form	V-ing form
should I not impair? should you not impair? should he not impair? should we not impair? should you not impair? should they not impair?	should I not be impairing? should you not be impairing? should he not be impairing? should we not be impairing? should you not be impairing? should they not be impairing?
Perfect	V-ing perfect
should I not have impaired? should you not have impaired? should he not have impaired? should we not have impaired? should you not have impaired? should they not have impaired?	should I not have been impairing? should you not have been impairing? should he not have been impairing? should we not have been impairing? should you not have been impairing? should they not have been impairing?