could complement
Verbo regular: complement - complemented- complemented

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could complement
you could complement
he could complement
we could complement
you could complement
they could complement 	I could be complementing
you could be complementing
he could be complementing
we could be complementing
you could be complementing
they could be complementing	I could have complemented
you could have complemented
he could have complemented
we could have complemented
you could have complemented
they could have complemented	I could have been complementing
you could have been complementing
he could have been complementing
we could have been complementing
you could have been complementing
they could have been complementing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not complement
you could not complement
he could not complement
we could not complement
you could not complement
they could not complement 	I could not be complementing
you could not be complementing
he could not be complementing
we could not be complementing
you could not be complementing
they could not be complementing	I could not have complemented
you could not have complemented
he could not have complemented
we could not have complemented
you could not have complemented
they could not have complemented	I could not have been complementing
you could not have been complementing
he could not have been complementing
we could not have been complementing
you could not have been complementing
they could not have been complementing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I complement?
could you complement?
could he complement?
could we complement?
could you complement?
could they complement? 	could I be complementing?
could you be complementing?
could he be complementing?
could we be complementing?
could you be complementing?
could they be complementing? 	could I have complemented?
could you have complemented?
could he have complemented?
could we have complemented?
could you have complemented?
could they have complemented? 	could I have been complementing?
could you have been complementing?
could he have been complementing?
could we have been complementing?
could you have been complementing?
could they have been complementing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not complement?
could you not complement?
could he not complement?
could we not complement?
could you not complement?
could they not complement? 	could I not be complementing?
could you not be complementing?
could he not be complementing?
could we not be complementing?
could you not be complementing?
could they not be complementing? 	could I not have complemented?
could you not have complemented?
could he not have complemented?
could we not have complemented?
could you not have complemented?
could they not have complemented? 	could I not have been complementing?
could you not have been complementing?
could he not have been complementing?
could we not have been complementing?
could you not have been complementing?
could they not have been complementing?