could chapter
Verbo regular: chapter - chaptered- chaptered

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could chapter
you could chapter
he could chapter
we could chapter
you could chapter
they could chapter 	I could be chaptering
you could be chaptering
he could be chaptering
we could be chaptering
you could be chaptering
they could be chaptering	I could have chaptered
you could have chaptered
he could have chaptered
we could have chaptered
you could have chaptered
they could have chaptered	I could have been chaptering
you could have been chaptering
he could have been chaptering
we could have been chaptering
you could have been chaptering
they could have been chaptering	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not chapter
you could not chapter
he could not chapter
we could not chapter
you could not chapter
they could not chapter 	I could not be chaptering
you could not be chaptering
he could not be chaptering
we could not be chaptering
you could not be chaptering
they could not be chaptering	I could not have chaptered
you could not have chaptered
he could not have chaptered
we could not have chaptered
you could not have chaptered
they could not have chaptered	I could not have been chaptering
you could not have been chaptering
he could not have been chaptering
we could not have been chaptering
you could not have been chaptering
they could not have been chaptering	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I chapter?
could you chapter?
could he chapter?
could we chapter?
could you chapter?
could they chapter? 	could I be chaptering?
could you be chaptering?
could he be chaptering?
could we be chaptering?
could you be chaptering?
could they be chaptering? 	could I have chaptered?
could you have chaptered?
could he have chaptered?
could we have chaptered?
could you have chaptered?
could they have chaptered? 	could I have been chaptering?
could you have been chaptering?
could he have been chaptering?
could we have been chaptering?
could you have been chaptering?
could they have been chaptering? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not chapter?
could you not chapter?
could he not chapter?
could we not chapter?
could you not chapter?
could they not chapter? 	could I not be chaptering?
could you not be chaptering?
could he not be chaptering?
could we not be chaptering?
could you not be chaptering?
could they not be chaptering? 	could I not have chaptered?
could you not have chaptered?
could he not have chaptered?
could we not have chaptered?
could you not have chaptered?
could they not have chaptered? 	could I not have been chaptering?
could you not have been chaptering?
could he not have been chaptering?
could we not have been chaptering?
could you not have been chaptering?
could they not have been chaptering?