English verb conjugation
MAY USE

Regular verb: use - used - used

Affirmation

Simple form	V-ing form
I may use you may use she may use we may use you may use they may use	I may be using you may be using she may be using we may be using you may be using they may be using
Perfect	V-ing perfect
I may have used you may have used she may have used we may have used you may have used they may have used	I may have been using you may have been using she may have been using we may have been using you may have been using they may have been using

Negation

Simple form	V-ing form
I may not use you may not use she may not use we may not use you may not use they may not use	I may not be using you may not be using she may not be using we may not be using you may not be using they may not be using
Perfect	V-ing perfect
I may not have used you may not have used she may not have used we may not have used you may not have used they may not have used	I may not have been using you may not have been using she may not have been using we may not have been using you may not have been using they may not have been using

Interrogative form

Simple form	V-ing form
may I use? may you use? may she use? may we use? may you use? may they use?	may I be using? may you be using? may she be using? may we be using? may you be using? may they be using?
Perfect	V-ing perfect
may I have used? may you have used? may she have used? may we have used? may you have used? may they have used?	may I have been using? may you have been using? may she have been using? may we have been using? may you have been using? may they have been using?

Interro-negative form

Simple form	V-ing form
may I not use? may you not use? may she not use? may we not use? may you not use? may they not use?	may I not be using? may you not be using? may she not be using? may we not be using? may you not be using? may they not be using?
Perfect	V-ing perfect
may I not have used? may you not have used? may she not have used? may we not have used? may you not have used? may they not have used?	may I not have been using? may you not have been using? may she not have been using? may we not have been using? may you not have been using? may they not have been using?