could thrall
Verbo regular: thrall - thralled- thralled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could thrall
you could thrall
he could thrall
we could thrall
you could thrall
they could thrall 	I could be thralling
you could be thralling
he could be thralling
we could be thralling
you could be thralling
they could be thralling	I could have thralled
you could have thralled
he could have thralled
we could have thralled
you could have thralled
they could have thralled	I could have been thralling
you could have been thralling
he could have been thralling
we could have been thralling
you could have been thralling
they could have been thralling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not thrall
you could not thrall
he could not thrall
we could not thrall
you could not thrall
they could not thrall 	I could not be thralling
you could not be thralling
he could not be thralling
we could not be thralling
you could not be thralling
they could not be thralling	I could not have thralled
you could not have thralled
he could not have thralled
we could not have thralled
you could not have thralled
they could not have thralled	I could not have been thralling
you could not have been thralling
he could not have been thralling
we could not have been thralling
you could not have been thralling
they could not have been thralling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I thrall?
could you thrall?
could he thrall?
could we thrall?
could you thrall?
could they thrall? 	could I be thralling?
could you be thralling?
could he be thralling?
could we be thralling?
could you be thralling?
could they be thralling? 	could I have thralled?
could you have thralled?
could he have thralled?
could we have thralled?
could you have thralled?
could they have thralled? 	could I have been thralling?
could you have been thralling?
could he have been thralling?
could we have been thralling?
could you have been thralling?
could they have been thralling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not thrall?
could you not thrall?
could he not thrall?
could we not thrall?
could you not thrall?
could they not thrall? 	could I not be thralling?
could you not be thralling?
could he not be thralling?
could we not be thralling?
could you not be thralling?
could they not be thralling? 	could I not have thralled?
could you not have thralled?
could he not have thralled?
could we not have thralled?
could you not have thralled?
could they not have thralled? 	could I not have been thralling?
could you not have been thralling?
could he not have been thralling?
could we not have been thralling?
could you not have been thralling?
could they not have been thralling?