could implement
Regular verb: implement - implemented- implemented

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not implement
you could not implement
she could not implement
we could not implement
you could not implement
they could not implement 	I could not be implementing
you could not be implementing
she could not be implementing
we could not be implementing
you could not be implementing
they could not be implementing	I could not have implemented
you could not have implemented
she could not have implemented
we could not have implemented
you could not have implemented
they could not have implemented	I could not have been implementing
you could not have been implementing
she could not have been implementing
we could not have been implementing
you could not have been implementing
they could not have been implementing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not implement?
could you not implement?
could she not implement?
could we not implement?
could you not implement?
could they not implement? 	could I not be implementing?
could you not be implementing?
could she not be implementing?
could we not be implementing?
could you not be implementing?
could they not be implementing? 	could I not have implemented?
could you not have implemented?
could she not have implemented?
could we not have implemented?
could you not have implemented?
could they not have implemented? 	could I not have been implementing?
could you not have been implementing?
could she not have been implementing?
could we not have been implementing?
could you not have been implementing?
could they not have been implementing?