could null
Verbo regular: null - nulled- nulled

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could null
you could null
she could null
we could null
you could null
they could null 	I could be nulling
you could be nulling
she could be nulling
we could be nulling
you could be nulling
they could be nulling	I could have nulled
you could have nulled
she could have nulled
we could have nulled
you could have nulled
they could have nulled	I could have been nulling
you could have been nulling
she could have been nulling
we could have been nulling
you could have been nulling
they could have been nulling	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't null
you couldn't null
she couldn't null
we couldn't null
you couldn't null
they couldn't null 	I couldn't be nulling
you couldn't be nulling
she couldn't be nulling
we couldn't be nulling
you couldn't be nulling
they couldn't be nulling	I couldn't have nulled
you couldn't have nulled
she couldn't have nulled
we couldn't have nulled
you couldn't have nulled
they couldn't have nulled	I couldn't have been nulling
you couldn't have been nulling
she couldn't have been nulling
we couldn't have been nulling
you couldn't have been nulling
they couldn't have been nulling	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I null?
could you null?
could she null?
could we null?
could you null?
could they null? 	could I be nulling?
could you be nulling?
could she be nulling?
could we be nulling?
could you be nulling?
could they be nulling? 	could I have nulled?
could you have nulled?
could she have nulled?
could we have nulled?
could you have nulled?
could they have nulled? 	could I have been nulling?
could you have been nulling?
could she have been nulling?
could we have been nulling?
could you have been nulling?
could they have been nulling? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I null?
couldn't you null?
couldn't she null?
couldn't we null?
couldn't you null?
couldn't they null? 	couldn't I be nulling?
couldn't you be nulling?
couldn't she be nulling?
couldn't we be nulling?
couldn't you be nulling?
couldn't they be nulling? 	couldn't I have nulled?
couldn't you have nulled?
couldn't she have nulled?
couldn't we have nulled?
couldn't you have nulled?
couldn't they have nulled? 	couldn't I have been nulling?
couldn't you have been nulling?
couldn't she have been nulling?
couldn't we have been nulling?
couldn't you have been nulling?
couldn't they have been nulling?