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 mayn't vouch you mayn't vouch he mayn't vouch we mayn't vouch you mayn't vouch they mayn't vouch	I mayn't be vouching you mayn't be vouching he mayn't be vouching we mayn't be vouching you mayn't be vouching they mayn't be vouching
Perfect	V-ing perfect
I mayn't have vouched you mayn't have vouched he mayn't have vouched we mayn't have vouched you mayn't have vouched they mayn't have vouched	I mayn't have been vouching you mayn't have been vouching he mayn't have been vouching we mayn't have been vouching you mayn't have been vouching they mayn't 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
mayn't I vouch? mayn't you vouch? mayn't he vouch? mayn't we vouch? mayn't you vouch? mayn't they vouch?	mayn't I be vouching? mayn't you be vouching? mayn't he be vouching? mayn't we be vouching? mayn't you be vouching? mayn't they be vouching?
Perfect	V-ing perfect
mayn't I have vouched? mayn't you have vouched? mayn't he have vouched? mayn't we have vouched? mayn't you have vouched? mayn't they have vouched?	mayn't I have been vouching? mayn't you have been vouching? mayn't he have been vouching? mayn't we have been vouching? mayn't you have been vouching? mayn't they have been vouching?