could pervade
Verbo regular: pervade - pervaded- pervaded

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could pervade
you could pervade
he could pervade
we could pervade
you could pervade
they could pervade 	I could be pervading
you could be pervading
he could be pervading
we could be pervading
you could be pervading
they could be pervading	I could have pervaded
you could have pervaded
he could have pervaded
we could have pervaded
you could have pervaded
they could have pervaded	I could have been pervading
you could have been pervading
he could have been pervading
we could have been pervading
you could have been pervading
they could have been pervading	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not pervade
you could not pervade
he could not pervade
we could not pervade
you could not pervade
they could not pervade 	I could not be pervading
you could not be pervading
he could not be pervading
we could not be pervading
you could not be pervading
they could not be pervading	I could not have pervaded
you could not have pervaded
he could not have pervaded
we could not have pervaded
you could not have pervaded
they could not have pervaded	I could not have been pervading
you could not have been pervading
he could not have been pervading
we could not have been pervading
you could not have been pervading
they could not have been pervading	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I pervade?
could you pervade?
could he pervade?
could we pervade?
could you pervade?
could they pervade? 	could I be pervading?
could you be pervading?
could he be pervading?
could we be pervading?
could you be pervading?
could they be pervading? 	could I have pervaded?
could you have pervaded?
could he have pervaded?
could we have pervaded?
could you have pervaded?
could they have pervaded? 	could I have been pervading?
could you have been pervading?
could he have been pervading?
could we have been pervading?
could you have been pervading?
could they have been pervading? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not pervade?
could you not pervade?
could he not pervade?
could we not pervade?
could you not pervade?
could they not pervade? 	could I not be pervading?
could you not be pervading?
could he not be pervading?
could we not be pervading?
could you not be pervading?
could they not be pervading? 	could I not have pervaded?
could you not have pervaded?
could he not have pervaded?
could we not have pervaded?
could you not have pervaded?
could they not have pervaded? 	could I not have been pervading?
could you not have been pervading?
could he not have been pervading?
could we not have been pervading?
could you not have been pervading?
could they not have been pervading?