could travail
Verbo regular: travail - travailed- travailed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could travail
you could travail
she could travail
we could travail
you could travail
they could travail 	I could be travailing
you could be travailing
she could be travailing
we could be travailing
you could be travailing
they could be travailing	I could have travailed
you could have travailed
she could have travailed
we could have travailed
you could have travailed
they could have travailed	I could have been travailing
you could have been travailing
she could have been travailing
we could have been travailing
you could have been travailing
they could have been travailing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't travail
you couldn't travail
she couldn't travail
we couldn't travail
you couldn't travail
they couldn't travail 	I couldn't be travailing
you couldn't be travailing
she couldn't be travailing
we couldn't be travailing
you couldn't be travailing
they couldn't be travailing	I couldn't have travailed
you couldn't have travailed
she couldn't have travailed
we couldn't have travailed
you couldn't have travailed
they couldn't have travailed	I couldn't have been travailing
you couldn't have been travailing
she couldn't have been travailing
we couldn't have been travailing
you couldn't have been travailing
they couldn't have been travailing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I travail?
could you travail?
could she travail?
could we travail?
could you travail?
could they travail? 	could I be travailing?
could you be travailing?
could she be travailing?
could we be travailing?
could you be travailing?
could they be travailing? 	could I have travailed?
could you have travailed?
could she have travailed?
could we have travailed?
could you have travailed?
could they have travailed? 	could I have been travailing?
could you have been travailing?
could she have been travailing?
could we have been travailing?
could you have been travailing?
could they have been travailing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I travail?
couldn't you travail?
couldn't she travail?
couldn't we travail?
couldn't you travail?
couldn't they travail? 	couldn't I be travailing?
couldn't you be travailing?
couldn't she be travailing?
couldn't we be travailing?
couldn't you be travailing?
couldn't they be travailing? 	couldn't I have travailed?
couldn't you have travailed?
couldn't she have travailed?
couldn't we have travailed?
couldn't you have travailed?
couldn't they have travailed? 	couldn't I have been travailing?
couldn't you have been travailing?
couldn't she have been travailing?
couldn't we have been travailing?
couldn't you have been travailing?
couldn't they have been travailing?