could surround
Verbo regular: surround - surrounded- surrounded

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could surround
you could surround
he could surround
we could surround
you could surround
they could surround 	I could be surrounding
you could be surrounding
he could be surrounding
we could be surrounding
you could be surrounding
they could be surrounding	I could have surrounded
you could have surrounded
he could have surrounded
we could have surrounded
you could have surrounded
they could have surrounded	I could have been surrounding
you could have been surrounding
he could have been surrounding
we could have been surrounding
you could have been surrounding
they could have been surrounding	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not surround
you could not surround
he could not surround
we could not surround
you could not surround
they could not surround 	I could not be surrounding
you could not be surrounding
he could not be surrounding
we could not be surrounding
you could not be surrounding
they could not be surrounding	I could not have surrounded
you could not have surrounded
he could not have surrounded
we could not have surrounded
you could not have surrounded
they could not have surrounded	I could not have been surrounding
you could not have been surrounding
he could not have been surrounding
we could not have been surrounding
you could not have been surrounding
they could not have been surrounding	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I surround?
could you surround?
could he surround?
could we surround?
could you surround?
could they surround? 	could I be surrounding?
could you be surrounding?
could he be surrounding?
could we be surrounding?
could you be surrounding?
could they be surrounding? 	could I have surrounded?
could you have surrounded?
could he have surrounded?
could we have surrounded?
could you have surrounded?
could they have surrounded? 	could I have been surrounding?
could you have been surrounding?
could he have been surrounding?
could we have been surrounding?
could you have been surrounding?
could they have been surrounding? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not surround?
could you not surround?
could he not surround?
could we not surround?
could you not surround?
could they not surround? 	could I not be surrounding?
could you not be surrounding?
could he not be surrounding?
could we not be surrounding?
could you not be surrounding?
could they not be surrounding? 	could I not have surrounded?
could you not have surrounded?
could he not have surrounded?
could we not have surrounded?
could you not have surrounded?
could they not have surrounded? 	could I not have been surrounding?
could you not have been surrounding?
could he not have been surrounding?
could we not have been surrounding?
could you not have been surrounding?
could they not have been surrounding?