could default
Verbo regular: default - defaulted- defaulted

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could default
you could default
she could default
we could default
you could default
they could default 	I could be defaulting
you could be defaulting
she could be defaulting
we could be defaulting
you could be defaulting
they could be defaulting	I could have defaulted
you could have defaulted
she could have defaulted
we could have defaulted
you could have defaulted
they could have defaulted	I could have been defaulting
you could have been defaulting
she could have been defaulting
we could have been defaulting
you could have been defaulting
they could have been defaulting	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not default
you could not default
she could not default
we could not default
you could not default
they could not default 	I could not be defaulting
you could not be defaulting
she could not be defaulting
we could not be defaulting
you could not be defaulting
they could not be defaulting	I could not have defaulted
you could not have defaulted
she could not have defaulted
we could not have defaulted
you could not have defaulted
they could not have defaulted	I could not have been defaulting
you could not have been defaulting
she could not have been defaulting
we could not have been defaulting
you could not have been defaulting
they could not have been defaulting	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I default?
could you default?
could she default?
could we default?
could you default?
could they default? 	could I be defaulting?
could you be defaulting?
could she be defaulting?
could we be defaulting?
could you be defaulting?
could they be defaulting? 	could I have defaulted?
could you have defaulted?
could she have defaulted?
could we have defaulted?
could you have defaulted?
could they have defaulted? 	could I have been defaulting?
could you have been defaulting?
could she have been defaulting?
could we have been defaulting?
could you have been defaulting?
could they have been defaulting? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not default?
could you not default?
could she not default?
could we not default?
could you not default?
could they not default? 	could I not be defaulting?
could you not be defaulting?
could she not be defaulting?
could we not be defaulting?
could you not be defaulting?
could they not be defaulting? 	could I not have defaulted?
could you not have defaulted?
could she not have defaulted?
could we not have defaulted?
could you not have defaulted?
could they not have defaulted? 	could I not have been defaulting?
could you not have been defaulting?
could she not have been defaulting?
could we not have been defaulting?
could you not have been defaulting?
could they not have been defaulting?