could shampoo
Verbo regular: shampoo - shampooed- shampooed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com 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	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't shampoo
you couldn't shampoo
he couldn't shampoo
we couldn't shampoo
you couldn't shampoo
they couldn't shampoo 	I couldn't be shampooing
you couldn't be shampooing
he couldn't be shampooing
we couldn't be shampooing
you couldn't be shampooing
they couldn't be shampooing	I couldn't have shampooed
you couldn't have shampooed
he couldn't have shampooed
we couldn't have shampooed
you couldn't have shampooed
they couldn't have shampooed	I couldn't have been shampooing
you couldn't have been shampooing
he couldn't have been shampooing
we couldn't have been shampooing
you couldn't have been shampooing
they couldn't have been shampooing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com 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-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I shampoo?
couldn't you shampoo?
couldn't he shampoo?
couldn't we shampoo?
couldn't you shampoo?
couldn't they shampoo? 	couldn't I be shampooing?
couldn't you be shampooing?
couldn't he be shampooing?
couldn't we be shampooing?
couldn't you be shampooing?
couldn't they be shampooing? 	couldn't I have shampooed?
couldn't you have shampooed?
couldn't he have shampooed?
couldn't we have shampooed?
couldn't you have shampooed?
couldn't they have shampooed? 	couldn't I have been shampooing?
couldn't you have been shampooing?
couldn't he have been shampooing?
couldn't we have been shampooing?
couldn't you have been shampooing?
couldn't they have been shampooing?