could pertain
Verbo regular: pertain - pertained- pertained

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could pertain
you could pertain
he could pertain
we could pertain
you could pertain
they could pertain 	I could be pertaining
you could be pertaining
he could be pertaining
we could be pertaining
you could be pertaining
they could be pertaining	I could have pertained
you could have pertained
he could have pertained
we could have pertained
you could have pertained
they could have pertained	I could have been pertaining
you could have been pertaining
he could have been pertaining
we could have been pertaining
you could have been pertaining
they could have been pertaining	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not pertain
you could not pertain
he could not pertain
we could not pertain
you could not pertain
they could not pertain 	I could not be pertaining
you could not be pertaining
he could not be pertaining
we could not be pertaining
you could not be pertaining
they could not be pertaining	I could not have pertained
you could not have pertained
he could not have pertained
we could not have pertained
you could not have pertained
they could not have pertained	I could not have been pertaining
you could not have been pertaining
he could not have been pertaining
we could not have been pertaining
you could not have been pertaining
they could not have been pertaining	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I pertain?
could you pertain?
could he pertain?
could we pertain?
could you pertain?
could they pertain? 	could I be pertaining?
could you be pertaining?
could he be pertaining?
could we be pertaining?
could you be pertaining?
could they be pertaining? 	could I have pertained?
could you have pertained?
could he have pertained?
could we have pertained?
could you have pertained?
could they have pertained? 	could I have been pertaining?
could you have been pertaining?
could he have been pertaining?
could we have been pertaining?
could you have been pertaining?
could they have been pertaining? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not pertain?
could you not pertain?
could he not pertain?
could we not pertain?
could you not pertain?
could they not pertain? 	could I not be pertaining?
could you not be pertaining?
could he not be pertaining?
could we not be pertaining?
could you not be pertaining?
could they not be pertaining? 	could I not have pertained?
could you not have pertained?
could he not have pertained?
could we not have pertained?
could you not have pertained?
could they not have pertained? 	could I not have been pertaining?
could you not have been pertaining?
could he not have been pertaining?
could we not have been pertaining?
could you not have been pertaining?
could they not have been pertaining?