may persist
Regular verb: persist - persisted- persisted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may persist
you may persist
she may persist
we may persist
you may persist
they may persist 	I may be persisting
you may be persisting
she may be persisting
we may be persisting
you may be persisting
they may be persisting	I may have persisted
you may have persisted
she may have persisted
we may have persisted
you may have persisted
they may have persisted	I may have been persisting
you may have been persisting
she may have been persisting
we may have been persisting
you may have been persisting
they may have been persisting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may not persist
you may not persist
she may not persist
we may not persist
you may not persist
they may not persist 	I may not be persisting
you may not be persisting
she may not be persisting
we may not be persisting
you may not be persisting
they may not be persisting	I may not have persisted
you may not have persisted
she may not have persisted
we may not have persisted
you may not have persisted
they may not have persisted	I may not have been persisting
you may not have been persisting
she may not have been persisting
we may not have been persisting
you may not have been persisting
they may not have been persisting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I persist?
may you persist?
may she persist?
may we persist?
may you persist?
may they persist? 	may I be persisting?
may you be persisting?
may she be persisting?
may we be persisting?
may you be persisting?
may they be persisting? 	may I have persisted?
may you have persisted?
may she have persisted?
may we have persisted?
may you have persisted?
may they have persisted? 	may I have been persisting?
may you have been persisting?
may she have been persisting?
may we have been persisting?
may you have been persisting?
may they have been persisting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I not persist?
may you not persist?
may she not persist?
may we not persist?
may you not persist?
may they not persist? 	may I not be persisting?
may you not be persisting?
may she not be persisting?
may we not be persisting?
may you not be persisting?
may they not be persisting? 	may I not have persisted?
may you not have persisted?
may she not have persisted?
may we not have persisted?
may you not have persisted?
may they not have persisted? 	may I not have been persisting?
may you not have been persisting?
may she not have been persisting?
may we not have been persisting?
may you not have been persisting?
may they not have been persisting?