English verb conjugation
MAY VARY

Regular verb: vary - varied - varied

Affirmation

Simple form	V-ing form
I may vary you may vary she may vary we may vary you may vary they may vary	I may be varying you may be varying she may be varying we may be varying you may be varying they may be varying
Perfect	V-ing perfect
I may have varied you may have varied she may have varied we may have varied you may have varied they may have varied	I may have been varying you may have been varying she may have been varying we may have been varying you may have been varying they may have been varying

Negation

Simple form	V-ing form
I mayn't vary you mayn't vary she mayn't vary we mayn't vary you mayn't vary they mayn't vary	I mayn't be varying you mayn't be varying she mayn't be varying we mayn't be varying you mayn't be varying they mayn't be varying
Perfect	V-ing perfect
I mayn't have varied you mayn't have varied she mayn't have varied we mayn't have varied you mayn't have varied they mayn't have varied	I mayn't have been varying you mayn't have been varying she mayn't have been varying we mayn't have been varying you mayn't have been varying they mayn't have been varying

Interrogative form

Simple form	V-ing form
may I vary? may you vary? may she vary? may we vary? may you vary? may they vary?	may I be varying? may you be varying? may she be varying? may we be varying? may you be varying? may they be varying?
Perfect	V-ing perfect
may I have varied? may you have varied? may she have varied? may we have varied? may you have varied? may they have varied?	may I have been varying? may you have been varying? may she have been varying? may we have been varying? may you have been varying? may they have been varying?

Interro-negative form

Simple form	V-ing form
mayn't I vary? mayn't you vary? mayn't she vary? mayn't we vary? mayn't you vary? mayn't they vary?	mayn't I be varying? mayn't you be varying? mayn't she be varying? mayn't we be varying? mayn't you be varying? mayn't they be varying?
Perfect	V-ing perfect
mayn't I have varied? mayn't you have varied? mayn't she have varied? mayn't we have varied? mayn't you have varied? mayn't they have varied?	mayn't I have been varying? mayn't you have been varying? mayn't she have been varying? mayn't we have been varying? mayn't you have been varying? mayn't they have been varying?