could decelerate
Verbo regular: decelerate - decelerated- decelerated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could decelerate
you could decelerate
he could decelerate
we could decelerate
you could decelerate
they could decelerate 	I could be decelerating
you could be decelerating
he could be decelerating
we could be decelerating
you could be decelerating
they could be decelerating	I could have decelerated
you could have decelerated
he could have decelerated
we could have decelerated
you could have decelerated
they could have decelerated	I could have been decelerating
you could have been decelerating
he could have been decelerating
we could have been decelerating
you could have been decelerating
they could have been decelerating	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not decelerate
you could not decelerate
he could not decelerate
we could not decelerate
you could not decelerate
they could not decelerate 	I could not be decelerating
you could not be decelerating
he could not be decelerating
we could not be decelerating
you could not be decelerating
they could not be decelerating	I could not have decelerated
you could not have decelerated
he could not have decelerated
we could not have decelerated
you could not have decelerated
they could not have decelerated	I could not have been decelerating
you could not have been decelerating
he could not have been decelerating
we could not have been decelerating
you could not have been decelerating
they could not have been decelerating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I decelerate?
could you decelerate?
could he decelerate?
could we decelerate?
could you decelerate?
could they decelerate? 	could I be decelerating?
could you be decelerating?
could he be decelerating?
could we be decelerating?
could you be decelerating?
could they be decelerating? 	could I have decelerated?
could you have decelerated?
could he have decelerated?
could we have decelerated?
could you have decelerated?
could they have decelerated? 	could I have been decelerating?
could you have been decelerating?
could he have been decelerating?
could we have been decelerating?
could you have been decelerating?
could they have been decelerating? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not decelerate?
could you not decelerate?
could he not decelerate?
could we not decelerate?
could you not decelerate?
could they not decelerate? 	could I not be decelerating?
could you not be decelerating?
could he not be decelerating?
could we not be decelerating?
could you not be decelerating?
could they not be decelerating? 	could I not have decelerated?
could you not have decelerated?
could he not have decelerated?
could we not have decelerated?
could you not have decelerated?
could they not have decelerated? 	could I not have been decelerating?
could you not have been decelerating?
could he not have been decelerating?
could we not have been decelerating?
could you not have been decelerating?
could they not have been decelerating?