could elapse
Verbo regular: elapse - elapsed- elapsed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could elapse
you could elapse
he could elapse
we could elapse
you could elapse
they could elapse 	I could be elapsing
you could be elapsing
he could be elapsing
we could be elapsing
you could be elapsing
they could be elapsing	I could have elapsed
you could have elapsed
he could have elapsed
we could have elapsed
you could have elapsed
they could have elapsed	I could have been elapsing
you could have been elapsing
he could have been elapsing
we could have been elapsing
you could have been elapsing
they could have been elapsing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not elapse
you could not elapse
he could not elapse
we could not elapse
you could not elapse
they could not elapse 	I could not be elapsing
you could not be elapsing
he could not be elapsing
we could not be elapsing
you could not be elapsing
they could not be elapsing	I could not have elapsed
you could not have elapsed
he could not have elapsed
we could not have elapsed
you could not have elapsed
they could not have elapsed	I could not have been elapsing
you could not have been elapsing
he could not have been elapsing
we could not have been elapsing
you could not have been elapsing
they could not have been elapsing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I elapse?
could you elapse?
could he elapse?
could we elapse?
could you elapse?
could they elapse? 	could I be elapsing?
could you be elapsing?
could he be elapsing?
could we be elapsing?
could you be elapsing?
could they be elapsing? 	could I have elapsed?
could you have elapsed?
could he have elapsed?
could we have elapsed?
could you have elapsed?
could they have elapsed? 	could I have been elapsing?
could you have been elapsing?
could he have been elapsing?
could we have been elapsing?
could you have been elapsing?
could they have been elapsing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not elapse?
could you not elapse?
could he not elapse?
could we not elapse?
could you not elapse?
could they not elapse? 	could I not be elapsing?
could you not be elapsing?
could he not be elapsing?
could we not be elapsing?
could you not be elapsing?
could they not be elapsing? 	could I not have elapsed?
could you not have elapsed?
could he not have elapsed?
could we not have elapsed?
could you not have elapsed?
could they not have elapsed? 	could I not have been elapsing?
could you not have been elapsing?
could he not have been elapsing?
could we not have been elapsing?
could you not have been elapsing?
could they not have been elapsing?