could writhe
Verbo regular: writhe - writhed- writhed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could writhe
you could writhe
he could writhe
we could writhe
you could writhe
they could writhe 	I could be writhing
you could be writhing
he could be writhing
we could be writhing
you could be writhing
they could be writhing	I could have writhed
you could have writhed
he could have writhed
we could have writhed
you could have writhed
they could have writhed	I could have been writhing
you could have been writhing
he could have been writhing
we could have been writhing
you could have been writhing
they could have been writhing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not writhe
you could not writhe
he could not writhe
we could not writhe
you could not writhe
they could not writhe 	I could not be writhing
you could not be writhing
he could not be writhing
we could not be writhing
you could not be writhing
they could not be writhing	I could not have writhed
you could not have writhed
he could not have writhed
we could not have writhed
you could not have writhed
they could not have writhed	I could not have been writhing
you could not have been writhing
he could not have been writhing
we could not have been writhing
you could not have been writhing
they could not have been writhing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I writhe?
could you writhe?
could he writhe?
could we writhe?
could you writhe?
could they writhe? 	could I be writhing?
could you be writhing?
could he be writhing?
could we be writhing?
could you be writhing?
could they be writhing? 	could I have writhed?
could you have writhed?
could he have writhed?
could we have writhed?
could you have writhed?
could they have writhed? 	could I have been writhing?
could you have been writhing?
could he have been writhing?
could we have been writhing?
could you have been writhing?
could they have been writhing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not writhe?
could you not writhe?
could he not writhe?
could we not writhe?
could you not writhe?
could they not writhe? 	could I not be writhing?
could you not be writhing?
could he not be writhing?
could we not be writhing?
could you not be writhing?
could they not be writhing? 	could I not have writhed?
could you not have writhed?
could he not have writhed?
could we not have writhed?
could you not have writhed?
could they not have writhed? 	could I not have been writhing?
could you not have been writhing?
could he not have been writhing?
could we not have been writhing?
could you not have been writhing?
could they not have been writhing?