could writhe
Verbo regular: writhe - writhed- writhed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could writhe
you could writhe
she could writhe
we could writhe
you could writhe
they could writhe 	I could be writhing
you could be writhing
she could be writhing
we could be writhing
you could be writhing
they could be writhing	I could have writhed
you could have writhed
she 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
she could have been writhing
we could have been writhing
you could have been writhing
they could have been writhing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't writhe
you couldn't writhe
she couldn't writhe
we couldn't writhe
you couldn't writhe
they couldn't writhe 	I couldn't be writhing
you couldn't be writhing
she couldn't be writhing
we couldn't be writhing
you couldn't be writhing
they couldn't be writhing	I couldn't have writhed
you couldn't have writhed
she couldn't have writhed
we couldn't have writhed
you couldn't have writhed
they couldn't have writhed	I couldn't have been writhing
you couldn't have been writhing
she couldn't have been writhing
we couldn't have been writhing
you couldn't have been writhing
they couldn't have been writhing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I writhe?
could you writhe?
could she writhe?
could we writhe?
could you writhe?
could they writhe? 	could I be writhing?
could you be writhing?
could she be writhing?
could we be writhing?
could you be writhing?
could they be writhing? 	could I have writhed?
could you have writhed?
could she 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 she have been writhing?
could we have been writhing?
could you have been writhing?
could they have been writhing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I writhe?
couldn't you writhe?
couldn't she writhe?
couldn't we writhe?
couldn't you writhe?
couldn't they writhe? 	couldn't I be writhing?
couldn't you be writhing?
couldn't she be writhing?
couldn't we be writhing?
couldn't you be writhing?
couldn't they be writhing? 	couldn't I have writhed?
couldn't you have writhed?
couldn't she have writhed?
couldn't we have writhed?
couldn't you have writhed?
couldn't they have writhed? 	couldn't I have been writhing?
couldn't you have been writhing?
couldn't she have been writhing?
couldn't we have been writhing?
couldn't you have been writhing?
couldn't they have been writhing?