would weaken
Regular verb: weaken - weakened- weakened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd weaken
you'd weaken
he'd weaken
we'd weaken
you'd weaken
they'd weaken 	I'd be weakening
you'd be weakening
he'd be weakening
we'd be weakening
you'd be weakening
they'd be weakening	I would've weakened
you would've weakened
he would've weakened
we would've weakened
you would've weakened
they would've weakened	I would've been weakening
you would've been weakening
he would've been weakening
we would've been weakening
you would've been weakening
they would've been weakening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I wouldn't weaken
you wouldn't weaken
he wouldn't weaken
we wouldn't weaken
you wouldn't weaken
they wouldn't weaken 	I wouldn't be weakening
you wouldn't be weakening
he wouldn't be weakening
we wouldn't be weakening
you wouldn't be weakening
they wouldn't be weakening	I wouldn't have weakened
you wouldn't have weakened
he wouldn't have weakened
we wouldn't have weakened
you wouldn't have weakened
they wouldn't have weakened	I wouldn't have been weakening
you wouldn't have been weakening
he wouldn't have been weakening
we wouldn't have been weakening
you wouldn't have been weakening
they wouldn't have been weakening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
would I weaken?
would you weaken?
would he weaken?
would we weaken?
would you weaken?
would they weaken? 	would I be weakening?
would you be weakening?
would he be weakening?
would we be weakening?
would you be weakening?
would they be weakening? 	would I have weakened?
would you have weakened?
would he have weakened?
would we have weakened?
would you have weakened?
would they have weakened? 	would I have been weakening?
would you have been weakening?
would he have been weakening?
would we have been weakening?
would you have been weakening?
would they have been weakening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
wouldn't I weaken?
wouldn't you weaken?
wouldn't he weaken?
wouldn't we weaken?
wouldn't you weaken?
wouldn't they weaken? 	wouldn't I be weakening?
wouldn't you be weakening?
wouldn't he be weakening?
wouldn't we be weakening?
wouldn't you be weakening?
wouldn't they be weakening? 	wouldn't I have weakened?
wouldn't you have weakened?
wouldn't he have weakened?
wouldn't we have weakened?
wouldn't you have weakened?
wouldn't they have weakened? 	wouldn't I have been weakening?
wouldn't you have been weakening?
wouldn't he have been weakening?
wouldn't we have been weakening?
wouldn't you have been weakening?
wouldn't they have been weakening?