could estivate
Verbo regular: estivate - estivated- estivated

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could estivate
you could estivate
he could estivate
we could estivate
you could estivate
they could estivate 	I could be estivating
you could be estivating
he could be estivating
we could be estivating
you could be estivating
they could be estivating	I could have estivated
you could have estivated
he could have estivated
we could have estivated
you could have estivated
they could have estivated	I could have been estivating
you could have been estivating
he could have been estivating
we could have been estivating
you could have been estivating
they could have been estivating	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not estivate
you could not estivate
he could not estivate
we could not estivate
you could not estivate
they could not estivate 	I could not be estivating
you could not be estivating
he could not be estivating
we could not be estivating
you could not be estivating
they could not be estivating	I could not have estivated
you could not have estivated
he could not have estivated
we could not have estivated
you could not have estivated
they could not have estivated	I could not have been estivating
you could not have been estivating
he could not have been estivating
we could not have been estivating
you could not have been estivating
they could not have been estivating	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I estivate?
could you estivate?
could he estivate?
could we estivate?
could you estivate?
could they estivate? 	could I be estivating?
could you be estivating?
could he be estivating?
could we be estivating?
could you be estivating?
could they be estivating? 	could I have estivated?
could you have estivated?
could he have estivated?
could we have estivated?
could you have estivated?
could they have estivated? 	could I have been estivating?
could you have been estivating?
could he have been estivating?
could we have been estivating?
could you have been estivating?
could they have been estivating? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not estivate?
could you not estivate?
could he not estivate?
could we not estivate?
could you not estivate?
could they not estivate? 	could I not be estivating?
could you not be estivating?
could he not be estivating?
could we not be estivating?
could you not be estivating?
could they not be estivating? 	could I not have estivated?
could you not have estivated?
could he not have estivated?
could we not have estivated?
could you not have estivated?
could they not have estivated? 	could I not have been estivating?
could you not have been estivating?
could he not have been estivating?
could we not have been estivating?
could you not have been estivating?
could they not have been estivating?