could shampoo
Verbo regular: shampoo - shampooed- shampooed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could shampoo
you could shampoo
he could shampoo
we could shampoo
you could shampoo
they could shampoo 	I could be shampooing
you could be shampooing
he could be shampooing
we could be shampooing
you could be shampooing
they could be shampooing	I could have shampooed
you could have shampooed
he could have shampooed
we could have shampooed
you could have shampooed
they could have shampooed	I could have been shampooing
you could have been shampooing
he could have been shampooing
we could have been shampooing
you could have been shampooing
they could have been shampooing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not shampoo
you could not shampoo
he could not shampoo
we could not shampoo
you could not shampoo
they could not shampoo 	I could not be shampooing
you could not be shampooing
he could not be shampooing
we could not be shampooing
you could not be shampooing
they could not be shampooing	I could not have shampooed
you could not have shampooed
he could not have shampooed
we could not have shampooed
you could not have shampooed
they could not have shampooed	I could not have been shampooing
you could not have been shampooing
he could not have been shampooing
we could not have been shampooing
you could not have been shampooing
they could not have been shampooing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I shampoo?
could you shampoo?
could he shampoo?
could we shampoo?
could you shampoo?
could they shampoo? 	could I be shampooing?
could you be shampooing?
could he be shampooing?
could we be shampooing?
could you be shampooing?
could they be shampooing? 	could I have shampooed?
could you have shampooed?
could he have shampooed?
could we have shampooed?
could you have shampooed?
could they have shampooed? 	could I have been shampooing?
could you have been shampooing?
could he have been shampooing?
could we have been shampooing?
could you have been shampooing?
could they have been shampooing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not shampoo?
could you not shampoo?
could he not shampoo?
could we not shampoo?
could you not shampoo?
could they not shampoo? 	could I not be shampooing?
could you not be shampooing?
could he not be shampooing?
could we not be shampooing?
could you not be shampooing?
could they not be shampooing? 	could I not have shampooed?
could you not have shampooed?
could he not have shampooed?
could we not have shampooed?
could you not have shampooed?
could they not have shampooed? 	could I not have been shampooing?
could you not have been shampooing?
could he not have been shampooing?
could we not have been shampooing?
could you not have been shampooing?
could they not have been shampooing?