could chapter
Verbo regular: chapter - chaptered- chaptered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con 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	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't chapter
you couldn't chapter
he couldn't chapter
we couldn't chapter
you couldn't chapter
they couldn't chapter 	I couldn't be chaptering
you couldn't be chaptering
he couldn't be chaptering
we couldn't be chaptering
you couldn't be chaptering
they couldn't be chaptering	I couldn't have chaptered
you couldn't have chaptered
he couldn't have chaptered
we couldn't have chaptered
you couldn't have chaptered
they couldn't have chaptered	I couldn't have been chaptering
you couldn't have been chaptering
he couldn't have been chaptering
we couldn't have been chaptering
you couldn't have been chaptering
they couldn't have been chaptering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con 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-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I chapter?
couldn't you chapter?
couldn't he chapter?
couldn't we chapter?
couldn't you chapter?
couldn't they chapter? 	couldn't I be chaptering?
couldn't you be chaptering?
couldn't he be chaptering?
couldn't we be chaptering?
couldn't you be chaptering?
couldn't they be chaptering? 	couldn't I have chaptered?
couldn't you have chaptered?
couldn't he have chaptered?
couldn't we have chaptered?
couldn't you have chaptered?
couldn't they have chaptered? 	couldn't I have been chaptering?
couldn't you have been chaptering?
couldn't he have been chaptering?
couldn't we have been chaptering?
couldn't you have been chaptering?
couldn't they have been chaptering?