might prevent
Regular verb: prevent - prevented- prevented

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I might prevent
you might prevent
he might prevent
we might prevent
you might prevent
they might prevent 	I might be preventing
you might be preventing
he might be preventing
we might be preventing
you might be preventing
they might be preventing	I might have prevented
you might have prevented
he might have prevented
we might have prevented
you might have prevented
they might have prevented	I might have been preventing
you might have been preventing
he might have been preventing
we might have been preventing
you might have been preventing
they might have been preventing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mightn't prevent
you mightn't prevent
he mightn't prevent
we mightn't prevent
you mightn't prevent
they mightn't prevent 	I mightn't be preventing
you mightn't be preventing
he mightn't be preventing
we mightn't be preventing
you mightn't be preventing
they mightn't be preventing	I mightn't have prevented
you mightn't have prevented
he mightn't have prevented
we mightn't have prevented
you mightn't have prevented
they mightn't have prevented	I mightn't have been preventing
you mightn't have been preventing
he mightn't have been preventing
we mightn't have been preventing
you mightn't have been preventing
they mightn't have been preventing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
might I prevent?
might you prevent?
might he prevent?
might we prevent?
might you prevent?
might they prevent? 	might I be preventing?
might you be preventing?
might he be preventing?
might we be preventing?
might you be preventing?
might they be preventing? 	might I have prevented?
might you have prevented?
might he have prevented?
might we have prevented?
might you have prevented?
might they have prevented? 	might I have been preventing?
might you have been preventing?
might he have been preventing?
might we have been preventing?
might you have been preventing?
might they have been preventing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mightn't I prevent?
mightn't you prevent?
mightn't he prevent?
mightn't we prevent?
mightn't you prevent?
mightn't they prevent? 	mightn't I be preventing?
mightn't you be preventing?
mightn't he be preventing?
mightn't we be preventing?
mightn't you be preventing?
mightn't they be preventing? 	mightn't I have prevented?
mightn't you have prevented?
mightn't he have prevented?
mightn't we have prevented?
mightn't you have prevented?
mightn't they have prevented? 	mightn't I have been preventing?
mightn't you have been preventing?
mightn't he have been preventing?
mightn't we have been preventing?
mightn't you have been preventing?
mightn't they have been preventing?