may vouch
Regular verb: vouch - vouched- vouched

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may vouch
you may vouch
he may vouch
we may vouch
you may vouch
they may vouch 	I may be vouching
you may be vouching
he may be vouching
we may be vouching
you may be vouching
they may be vouching	I may have vouched
you may have vouched
he may have vouched
we may have vouched
you may have vouched
they may have vouched	I may have been vouching
you may have been vouching
he may have been vouching
we may have been vouching
you may have been vouching
they may have been vouching	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may not vouch
you may not vouch
he may not vouch
we may not vouch
you may not vouch
they may not vouch 	I may not be vouching
you may not be vouching
he may not be vouching
we may not be vouching
you may not be vouching
they may not be vouching	I may not have vouched
you may not have vouched
he may not have vouched
we may not have vouched
you may not have vouched
they may not have vouched	I may not have been vouching
you may not have been vouching
he may not have been vouching
we may not have been vouching
you may not have been vouching
they may not have been vouching	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I vouch?
may you vouch?
may he vouch?
may we vouch?
may you vouch?
may they vouch? 	may I be vouching?
may you be vouching?
may he be vouching?
may we be vouching?
may you be vouching?
may they be vouching? 	may I have vouched?
may you have vouched?
may he have vouched?
may we have vouched?
may you have vouched?
may they have vouched? 	may I have been vouching?
may you have been vouching?
may he have been vouching?
may we have been vouching?
may you have been vouching?
may they have been vouching? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I not vouch?
may you not vouch?
may he not vouch?
may we not vouch?
may you not vouch?
may they not vouch? 	may I not be vouching?
may you not be vouching?
may he not be vouching?
may we not be vouching?
may you not be vouching?
may they not be vouching? 	may I not have vouched?
may you not have vouched?
may he not have vouched?
may we not have vouched?
may you not have vouched?
may they not have vouched? 	may I not have been vouching?
may you not have been vouching?
may he not have been vouching?
may we not have been vouching?
may you not have been vouching?
may they not have been vouching?