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
she could chapter
we could chapter
you could chapter
they could chapter 	I could be chaptering
you could be chaptering
she could be chaptering
we could be chaptering
you could be chaptering
they could be chaptering	I could have chaptered
you could have chaptered
she 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
she 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 couldn't chapter
you couldn't chapter
she 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
she 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
she 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
she 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 com V-ing 	Perfeito 	Perfeito com V-ing 	
could I chapter?
could you chapter?
could she chapter?
could we chapter?
could you chapter?
could they chapter? 	could I be chaptering?
could you be chaptering?
could she be chaptering?
could we be chaptering?
could you be chaptering?
could they be chaptering? 	could I have chaptered?
could you have chaptered?
could she 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 she 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 	
couldn't I chapter?
couldn't you chapter?
couldn't she 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 she 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 she 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 she have been chaptering?
couldn't we have been chaptering?
couldn't you have been chaptering?
couldn't they have been chaptering?