may persist
Verbo regular: persist - persisted- persisted

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I may persist
you may persist
he may persist
we may persist
you may persist
they may persist 	I may be persisting
you may be persisting
he may be persisting
we may be persisting
you may be persisting
they may be persisting	I may have persisted
you may have persisted
he 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
he may have been persisting
we may have been persisting
you may have been persisting
they may have been persisting	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I may not persist
you may not persist
he 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
he 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
he 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
he may not have been persisting
we may not have been persisting
you may not have been persisting
they may not have been persisting	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
may I persist?
may you persist?
may he persist?
may we persist?
may you persist?
may they persist? 	may I be persisting?
may you be persisting?
may he be persisting?
may we be persisting?
may you be persisting?
may they be persisting? 	may I have persisted?
may you have persisted?
may he 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 he have been persisting?
may we have been persisting?
may you have been persisting?
may they have been persisting? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
may I not persist?
may you not persist?
may he 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 he 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 he 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 he not have been persisting?
may we not have been persisting?
may you not have been persisting?
may they not have been persisting?