I can implement you can implement he can implement we can implement you can implement they can implement
V-ing form
I can be implementing you can be implementing he can be implementing we can be implementing you can be implementing they can be implementing
Perfect
I can have implemented you can have implemented he can have implemented we can have implemented you can have implemented they can have implemented
V-ing perfect
I can have been implementing you can have been implementing he can have been implementing we can have been implementing you can have been implementing they can have been implementing
Negation
Simple form
I can't implement you can't implement he can't implement we can't implement you can't implement they can't implement
V-ing form
I can't be implementing you can't be implementing he can't be implementing we can't be implementing you can't be implementing they can't be implementing
Perfect
I can't have implemented you can't have implemented he can't have implemented we can't have implemented you can't have implemented they can't have implemented
V-ing perfect
I can't have been implementing you can't have been implementing he can't have been implementing we can't have been implementing you can't have been implementing they can't have been implementing
Interrogative form
Simple form
can I implement? can you implement? can he implement? can we implement? can you implement? can they implement?
V-ing form
can I be implementing? can you be implementing? can he be implementing? can we be implementing? can you be implementing? can they be implementing?
Perfect
can I have implemented? can you have implemented? can he have implemented? can we have implemented? can you have implemented? can they have implemented?
V-ing perfect
can I have been implementing? can you have been implementing? can he have been implementing? can we have been implementing? can you have been implementing? can they have been implementing?
Interro-negative form
Simple form
can't I implement? can't you implement? can't he implement? can't we implement? can't you implement? can't they implement?
V-ing form
can't I be implementing? can't you be implementing? can't he be implementing? can't we be implementing? can't you be implementing? can't they be implementing?
Perfect
can't I have implemented? can't you have implemented? can't he have implemented? can't we have implemented? can't you have implemented? can't they have implemented?
V-ing perfect
can't I have been implementing? can't you have been implementing? can't he have been implementing? can't we have been implementing? can't you have been implementing? can't they have been implementing?