might weaken
Regular verb: weaken - weakened- weakened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I might weaken
you might weaken
she might weaken
we might weaken
you might weaken
they might weaken 	I might be weakening
you might be weakening
she might be weakening
we might be weakening
you might be weakening
they might be weakening	I might have weakened
you might have weakened
she might have weakened
we might have weakened
you might have weakened
they might have weakened	I might have been weakening
you might have been weakening
she might have been weakening
we might have been weakening
you might have been weakening
they might have been weakening	

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

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

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