could border
Verbo regular: border - bordered- bordered

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could border
you could border
he could border
we could border
you could border
they could border 	I could be bordering
you could be bordering
he could be bordering
we could be bordering
you could be bordering
they could be bordering	I could have bordered
you could have bordered
he could have bordered
we could have bordered
you could have bordered
they could have bordered	I could have been bordering
you could have been bordering
he could have been bordering
we could have been bordering
you could have been bordering
they could have been bordering	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not border
you could not border
he could not border
we could not border
you could not border
they could not border 	I could not be bordering
you could not be bordering
he could not be bordering
we could not be bordering
you could not be bordering
they could not be bordering	I could not have bordered
you could not have bordered
he could not have bordered
we could not have bordered
you could not have bordered
they could not have bordered	I could not have been bordering
you could not have been bordering
he could not have been bordering
we could not have been bordering
you could not have been bordering
they could not have been bordering	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I border?
could you border?
could he border?
could we border?
could you border?
could they border? 	could I be bordering?
could you be bordering?
could he be bordering?
could we be bordering?
could you be bordering?
could they be bordering? 	could I have bordered?
could you have bordered?
could he have bordered?
could we have bordered?
could you have bordered?
could they have bordered? 	could I have been bordering?
could you have been bordering?
could he have been bordering?
could we have been bordering?
could you have been bordering?
could they have been bordering? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not border?
could you not border?
could he not border?
could we not border?
could you not border?
could they not border? 	could I not be bordering?
could you not be bordering?
could he not be bordering?
could we not be bordering?
could you not be bordering?
could they not be bordering? 	could I not have bordered?
could you not have bordered?
could he not have bordered?
could we not have bordered?
could you not have bordered?
could they not have bordered? 	could I not have been bordering?
could you not have been bordering?
could he not have been bordering?
could we not have been bordering?
could you not have been bordering?
could they not have been bordering?