could crease
Verbo regular: crease - creased- creased

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could crease
you could crease
he could crease
we could crease
you could crease
they could crease 	I could be creasing
you could be creasing
he could be creasing
we could be creasing
you could be creasing
they could be creasing	I could have creased
you could have creased
he could have creased
we could have creased
you could have creased
they could have creased	I could have been creasing
you could have been creasing
he could have been creasing
we could have been creasing
you could have been creasing
they could have been creasing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not crease
you could not crease
he could not crease
we could not crease
you could not crease
they could not crease 	I could not be creasing
you could not be creasing
he could not be creasing
we could not be creasing
you could not be creasing
they could not be creasing	I could not have creased
you could not have creased
he could not have creased
we could not have creased
you could not have creased
they could not have creased	I could not have been creasing
you could not have been creasing
he could not have been creasing
we could not have been creasing
you could not have been creasing
they could not have been creasing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I crease?
could you crease?
could he crease?
could we crease?
could you crease?
could they crease? 	could I be creasing?
could you be creasing?
could he be creasing?
could we be creasing?
could you be creasing?
could they be creasing? 	could I have creased?
could you have creased?
could he have creased?
could we have creased?
could you have creased?
could they have creased? 	could I have been creasing?
could you have been creasing?
could he have been creasing?
could we have been creasing?
could you have been creasing?
could they have been creasing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not crease?
could you not crease?
could he not crease?
could we not crease?
could you not crease?
could they not crease? 	could I not be creasing?
could you not be creasing?
could he not be creasing?
could we not be creasing?
could you not be creasing?
could they not be creasing? 	could I not have creased?
could you not have creased?
could he not have creased?
could we not have creased?
could you not have creased?
could they not have creased? 	could I not have been creasing?
could you not have been creasing?
could he not have been creasing?
could we not have been creasing?
could you not have been creasing?
could they not have been creasing?