may preascertain
Verbo regular: preascertain - preascertained- preascertained

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I may preascertain
you may preascertain
he may preascertain
we may preascertain
you may preascertain
they may preascertain 	I may be preascertaining
you may be preascertaining
he may be preascertaining
we may be preascertaining
you may be preascertaining
they may be preascertaining	I may have preascertained
you may have preascertained
he may have preascertained
we may have preascertained
you may have preascertained
they may have preascertained	I may have been preascertaining
you may have been preascertaining
he may have been preascertaining
we may have been preascertaining
you may have been preascertaining
they may have been preascertaining	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I may not preascertain
you may not preascertain
he may not preascertain
we may not preascertain
you may not preascertain
they may not preascertain 	I may not be preascertaining
you may not be preascertaining
he may not be preascertaining
we may not be preascertaining
you may not be preascertaining
they may not be preascertaining	I may not have preascertained
you may not have preascertained
he may not have preascertained
we may not have preascertained
you may not have preascertained
they may not have preascertained	I may not have been preascertaining
you may not have been preascertaining
he may not have been preascertaining
we may not have been preascertaining
you may not have been preascertaining
they may not have been preascertaining	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
may I preascertain?
may you preascertain?
may he preascertain?
may we preascertain?
may you preascertain?
may they preascertain? 	may I be preascertaining?
may you be preascertaining?
may he be preascertaining?
may we be preascertaining?
may you be preascertaining?
may they be preascertaining? 	may I have preascertained?
may you have preascertained?
may he have preascertained?
may we have preascertained?
may you have preascertained?
may they have preascertained? 	may I have been preascertaining?
may you have been preascertaining?
may he have been preascertaining?
may we have been preascertaining?
may you have been preascertaining?
may they have been preascertaining? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
may I not preascertain?
may you not preascertain?
may he not preascertain?
may we not preascertain?
may you not preascertain?
may they not preascertain? 	may I not be preascertaining?
may you not be preascertaining?
may he not be preascertaining?
may we not be preascertaining?
may you not be preascertaining?
may they not be preascertaining? 	may I not have preascertained?
may you not have preascertained?
may he not have preascertained?
may we not have preascertained?
may you not have preascertained?
may they not have preascertained? 	may I not have been preascertaining?
may you not have been preascertaining?
may he not have been preascertaining?
may we not have been preascertaining?
may you not have been preascertaining?
may they not have been preascertaining?