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 couldn't elapse
you couldn't elapse
he couldn't elapse
we couldn't elapse
you couldn't elapse
they couldn't elapse 	I couldn't be elapsing
you couldn't be elapsing
he couldn't be elapsing
we couldn't be elapsing
you couldn't be elapsing
they couldn't be elapsing	I couldn't have elapsed
you couldn't have elapsed
he couldn't have elapsed
we couldn't have elapsed
you couldn't have elapsed
they couldn't have elapsed	I couldn't have been elapsing
you couldn't have been elapsing
he couldn't have been elapsing
we couldn't have been elapsing
you couldn't have been elapsing
they couldn't 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 	
couldn't I elapse?
couldn't you elapse?
couldn't he elapse?
couldn't we elapse?
couldn't you elapse?
couldn't they elapse? 	couldn't I be elapsing?
couldn't you be elapsing?
couldn't he be elapsing?
couldn't we be elapsing?
couldn't you be elapsing?
couldn't they be elapsing? 	couldn't I have elapsed?
couldn't you have elapsed?
couldn't he have elapsed?
couldn't we have elapsed?
couldn't you have elapsed?
couldn't they have elapsed? 	couldn't I have been elapsing?
couldn't you have been elapsing?
couldn't he have been elapsing?
couldn't we have been elapsing?
couldn't you have been elapsing?
couldn't they have been elapsing?