could defrost
Verbo regular: defrost - defrosted- defrosted

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could defrost
you could defrost
he could defrost
we could defrost
you could defrost
they could defrost 	I could be defrosting
you could be defrosting
he could be defrosting
we could be defrosting
you could be defrosting
they could be defrosting	I could have defrosted
you could have defrosted
he could have defrosted
we could have defrosted
you could have defrosted
they could have defrosted	I could have been defrosting
you could have been defrosting
he could have been defrosting
we could have been defrosting
you could have been defrosting
they could have been defrosting	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not defrost
you could not defrost
he could not defrost
we could not defrost
you could not defrost
they could not defrost 	I could not be defrosting
you could not be defrosting
he could not be defrosting
we could not be defrosting
you could not be defrosting
they could not be defrosting	I could not have defrosted
you could not have defrosted
he could not have defrosted
we could not have defrosted
you could not have defrosted
they could not have defrosted	I could not have been defrosting
you could not have been defrosting
he could not have been defrosting
we could not have been defrosting
you could not have been defrosting
they could not have been defrosting	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I defrost?
could you defrost?
could he defrost?
could we defrost?
could you defrost?
could they defrost? 	could I be defrosting?
could you be defrosting?
could he be defrosting?
could we be defrosting?
could you be defrosting?
could they be defrosting? 	could I have defrosted?
could you have defrosted?
could he have defrosted?
could we have defrosted?
could you have defrosted?
could they have defrosted? 	could I have been defrosting?
could you have been defrosting?
could he have been defrosting?
could we have been defrosting?
could you have been defrosting?
could they have been defrosting? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not defrost?
could you not defrost?
could he not defrost?
could we not defrost?
could you not defrost?
could they not defrost? 	could I not be defrosting?
could you not be defrosting?
could he not be defrosting?
could we not be defrosting?
could you not be defrosting?
could they not be defrosting? 	could I not have defrosted?
could you not have defrosted?
could he not have defrosted?
could we not have defrosted?
could you not have defrosted?
could they not have defrosted? 	could I not have been defrosting?
could you not have been defrosting?
could he not have been defrosting?
could we not have been defrosting?
could you not have been defrosting?
could they not have been defrosting?