could upholster
Verbo regular: upholster - upholstered- upholstered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could upholster
you could upholster
she could upholster
we could upholster
you could upholster
they could upholster 	I could be upholstering
you could be upholstering
she could be upholstering
we could be upholstering
you could be upholstering
they could be upholstering	I could have upholstered
you could have upholstered
she could have upholstered
we could have upholstered
you could have upholstered
they could have upholstered	I could have been upholstering
you could have been upholstering
she could have been upholstering
we could have been upholstering
you could have been upholstering
they could have been upholstering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not upholster
you could not upholster
she could not upholster
we could not upholster
you could not upholster
they could not upholster 	I could not be upholstering
you could not be upholstering
she could not be upholstering
we could not be upholstering
you could not be upholstering
they could not be upholstering	I could not have upholstered
you could not have upholstered
she could not have upholstered
we could not have upholstered
you could not have upholstered
they could not have upholstered	I could not have been upholstering
you could not have been upholstering
she could not have been upholstering
we could not have been upholstering
you could not have been upholstering
they could not have been upholstering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I upholster?
could you upholster?
could she upholster?
could we upholster?
could you upholster?
could they upholster? 	could I be upholstering?
could you be upholstering?
could she be upholstering?
could we be upholstering?
could you be upholstering?
could they be upholstering? 	could I have upholstered?
could you have upholstered?
could she have upholstered?
could we have upholstered?
could you have upholstered?
could they have upholstered? 	could I have been upholstering?
could you have been upholstering?
could she have been upholstering?
could we have been upholstering?
could you have been upholstering?
could they have been upholstering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not upholster?
could you not upholster?
could she not upholster?
could we not upholster?
could you not upholster?
could they not upholster? 	could I not be upholstering?
could you not be upholstering?
could she not be upholstering?
could we not be upholstering?
could you not be upholstering?
could they not be upholstering? 	could I not have upholstered?
could you not have upholstered?
could she not have upholstered?
could we not have upholstered?
could you not have upholstered?
could they not have upholstered? 	could I not have been upholstering?
could you not have been upholstering?
could she not have been upholstering?
could we not have been upholstering?
could you not have been upholstering?
could they not have been upholstering?