could flail
Verbo regular: flail - flailed- flailed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could flail
you could flail
he could flail
we could flail
you could flail
they could flail 	I could be flailing
you could be flailing
he could be flailing
we could be flailing
you could be flailing
they could be flailing	I could have flailed
you could have flailed
he could have flailed
we could have flailed
you could have flailed
they could have flailed	I could have been flailing
you could have been flailing
he could have been flailing
we could have been flailing
you could have been flailing
they could have been flailing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't flail
you couldn't flail
he couldn't flail
we couldn't flail
you couldn't flail
they couldn't flail 	I couldn't be flailing
you couldn't be flailing
he couldn't be flailing
we couldn't be flailing
you couldn't be flailing
they couldn't be flailing	I couldn't have flailed
you couldn't have flailed
he couldn't have flailed
we couldn't have flailed
you couldn't have flailed
they couldn't have flailed	I couldn't have been flailing
you couldn't have been flailing
he couldn't have been flailing
we couldn't have been flailing
you couldn't have been flailing
they couldn't have been flailing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I flail?
could you flail?
could he flail?
could we flail?
could you flail?
could they flail? 	could I be flailing?
could you be flailing?
could he be flailing?
could we be flailing?
could you be flailing?
could they be flailing? 	could I have flailed?
could you have flailed?
could he have flailed?
could we have flailed?
could you have flailed?
could they have flailed? 	could I have been flailing?
could you have been flailing?
could he have been flailing?
could we have been flailing?
could you have been flailing?
could they have been flailing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I flail?
couldn't you flail?
couldn't he flail?
couldn't we flail?
couldn't you flail?
couldn't they flail? 	couldn't I be flailing?
couldn't you be flailing?
couldn't he be flailing?
couldn't we be flailing?
couldn't you be flailing?
couldn't they be flailing? 	couldn't I have flailed?
couldn't you have flailed?
couldn't he have flailed?
couldn't we have flailed?
couldn't you have flailed?
couldn't they have flailed? 	couldn't I have been flailing?
couldn't you have been flailing?
couldn't he have been flailing?
couldn't we have been flailing?
couldn't you have been flailing?
couldn't they have been flailing?