could dummy
Verbo regular: dummy - dummied- dummied

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could dummy
you could dummy
he could dummy
we could dummy
you could dummy
they could dummy 	I could be dummying
you could be dummying
he could be dummying
we could be dummying
you could be dummying
they could be dummying	I could have dummied
you could have dummied
he could have dummied
we could have dummied
you could have dummied
they could have dummied	I could have been dummying
you could have been dummying
he could have been dummying
we could have been dummying
you could have been dummying
they could have been dummying	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not dummy
you could not dummy
he could not dummy
we could not dummy
you could not dummy
they could not dummy 	I could not be dummying
you could not be dummying
he could not be dummying
we could not be dummying
you could not be dummying
they could not be dummying	I could not have dummied
you could not have dummied
he could not have dummied
we could not have dummied
you could not have dummied
they could not have dummied	I could not have been dummying
you could not have been dummying
he could not have been dummying
we could not have been dummying
you could not have been dummying
they could not have been dummying	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I dummy?
could you dummy?
could he dummy?
could we dummy?
could you dummy?
could they dummy? 	could I be dummying?
could you be dummying?
could he be dummying?
could we be dummying?
could you be dummying?
could they be dummying? 	could I have dummied?
could you have dummied?
could he have dummied?
could we have dummied?
could you have dummied?
could they have dummied? 	could I have been dummying?
could you have been dummying?
could he have been dummying?
could we have been dummying?
could you have been dummying?
could they have been dummying? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not dummy?
could you not dummy?
could he not dummy?
could we not dummy?
could you not dummy?
could they not dummy? 	could I not be dummying?
could you not be dummying?
could he not be dummying?
could we not be dummying?
could you not be dummying?
could they not be dummying? 	could I not have dummied?
could you not have dummied?
could he not have dummied?
could we not have dummied?
could you not have dummied?
could they not have dummied? 	could I not have been dummying?
could you not have been dummying?
could he not have been dummying?
could we not have been dummying?
could you not have been dummying?
could they not have been dummying?