could cease
Verbo regular: cease - ceased- ceased

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could cease
you could cease
he could cease
we could cease
you could cease
they could cease 	I could be ceasing
you could be ceasing
he could be ceasing
we could be ceasing
you could be ceasing
they could be ceasing	I could have ceased
you could have ceased
he could have ceased
we could have ceased
you could have ceased
they could have ceased	I could have been ceasing
you could have been ceasing
he could have been ceasing
we could have been ceasing
you could have been ceasing
they could have been ceasing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't cease
you couldn't cease
he couldn't cease
we couldn't cease
you couldn't cease
they couldn't cease 	I couldn't be ceasing
you couldn't be ceasing
he couldn't be ceasing
we couldn't be ceasing
you couldn't be ceasing
they couldn't be ceasing	I couldn't have ceased
you couldn't have ceased
he couldn't have ceased
we couldn't have ceased
you couldn't have ceased
they couldn't have ceased	I couldn't have been ceasing
you couldn't have been ceasing
he couldn't have been ceasing
we couldn't have been ceasing
you couldn't have been ceasing
they couldn't have been ceasing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I cease?
could you cease?
could he cease?
could we cease?
could you cease?
could they cease? 	could I be ceasing?
could you be ceasing?
could he be ceasing?
could we be ceasing?
could you be ceasing?
could they be ceasing? 	could I have ceased?
could you have ceased?
could he have ceased?
could we have ceased?
could you have ceased?
could they have ceased? 	could I have been ceasing?
could you have been ceasing?
could he have been ceasing?
could we have been ceasing?
could you have been ceasing?
could they have been ceasing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I cease?
couldn't you cease?
couldn't he cease?
couldn't we cease?
couldn't you cease?
couldn't they cease? 	couldn't I be ceasing?
couldn't you be ceasing?
couldn't he be ceasing?
couldn't we be ceasing?
couldn't you be ceasing?
couldn't they be ceasing? 	couldn't I have ceased?
couldn't you have ceased?
couldn't he have ceased?
couldn't we have ceased?
couldn't you have ceased?
couldn't they have ceased? 	couldn't I have been ceasing?
couldn't you have been ceasing?
couldn't he have been ceasing?
couldn't we have been ceasing?
couldn't you have been ceasing?
couldn't they have been ceasing?