English verb conjugation
MAY VOUCH

Regular verb: vouch - vouched - vouched

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
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
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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?