could flex
Verbo regular: flex - flexed- flexed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could flex
you could flex
he could flex
we could flex
you could flex
they could flex 	I could be flexing
you could be flexing
he could be flexing
we could be flexing
you could be flexing
they could be flexing	I could have flexed
you could have flexed
he could have flexed
we could have flexed
you could have flexed
they could have flexed	I could have been flexing
you could have been flexing
he could have been flexing
we could have been flexing
you could have been flexing
they could have been flexing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not flex
you could not flex
he could not flex
we could not flex
you could not flex
they could not flex 	I could not be flexing
you could not be flexing
he could not be flexing
we could not be flexing
you could not be flexing
they could not be flexing	I could not have flexed
you could not have flexed
he could not have flexed
we could not have flexed
you could not have flexed
they could not have flexed	I could not have been flexing
you could not have been flexing
he could not have been flexing
we could not have been flexing
you could not have been flexing
they could not have been flexing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I flex?
could you flex?
could he flex?
could we flex?
could you flex?
could they flex? 	could I be flexing?
could you be flexing?
could he be flexing?
could we be flexing?
could you be flexing?
could they be flexing? 	could I have flexed?
could you have flexed?
could he have flexed?
could we have flexed?
could you have flexed?
could they have flexed? 	could I have been flexing?
could you have been flexing?
could he have been flexing?
could we have been flexing?
could you have been flexing?
could they have been flexing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not flex?
could you not flex?
could he not flex?
could we not flex?
could you not flex?
could they not flex? 	could I not be flexing?
could you not be flexing?
could he not be flexing?
could we not be flexing?
could you not be flexing?
could they not be flexing? 	could I not have flexed?
could you not have flexed?
could he not have flexed?
could we not have flexed?
could you not have flexed?
could they not have flexed? 	could I not have been flexing?
could you not have been flexing?
could he not have been flexing?
could we not have been flexing?
could you not have been flexing?
could they not have been flexing?