may use
Regular verb: use - used- used

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