could implement
Verbo regular: implement - implemented- implemented

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could implement
you could implement
she could implement
we could implement
you could implement
they could implement 	I could be implementing
you could be implementing
she could be implementing
we could be implementing
you could be implementing
they could be implementing	I could have implemented
you could have implemented
she could have implemented
we could have implemented
you could have implemented
they could have implemented	I could have been implementing
you could have been implementing
she could have been implementing
we could have been implementing
you could have been implementing
they could have been implementing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't implement
you couldn't implement
she couldn't implement
we couldn't implement
you couldn't implement
they couldn't implement 	I couldn't be implementing
you couldn't be implementing
she couldn't be implementing
we couldn't be implementing
you couldn't be implementing
they couldn't be implementing	I couldn't have implemented
you couldn't have implemented
she couldn't have implemented
we couldn't have implemented
you couldn't have implemented
they couldn't have implemented	I couldn't have been implementing
you couldn't have been implementing
she couldn't have been implementing
we couldn't have been implementing
you couldn't have been implementing
they couldn't have been implementing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I implement?
could you implement?
could she implement?
could we implement?
could you implement?
could they implement? 	could I be implementing?
could you be implementing?
could she be implementing?
could we be implementing?
could you be implementing?
could they be implementing? 	could I have implemented?
could you have implemented?
could she have implemented?
could we have implemented?
could you have implemented?
could they have implemented? 	could I have been implementing?
could you have been implementing?
could she have been implementing?
could we have been implementing?
could you have been implementing?
could they have been implementing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I implement?
couldn't you implement?
couldn't she implement?
couldn't we implement?
couldn't you implement?
couldn't they implement? 	couldn't I be implementing?
couldn't you be implementing?
couldn't she be implementing?
couldn't we be implementing?
couldn't you be implementing?
couldn't they be implementing? 	couldn't I have implemented?
couldn't you have implemented?
couldn't she have implemented?
couldn't we have implemented?
couldn't you have implemented?
couldn't they have implemented? 	couldn't I have been implementing?
couldn't you have been implementing?
couldn't she have been implementing?
couldn't we have been implementing?
couldn't you have been implementing?
couldn't they have been implementing?