I can recognize you can recognize he can recognize we can recognize you can recognize they can recognize
V-ing form
I can be recognizing you can be recognizing he can be recognizing we can be recognizing you can be recognizing they can be recognizing
Perfect
I can have recognized you can have recognized he can have recognized we can have recognized you can have recognized they can have recognized
V-ing perfect
I can have been recognizing you can have been recognizing he can have been recognizing we can have been recognizing you can have been recognizing they can have been recognizing
Negation
Simple form
I can't recognize you can't recognize he can't recognize we can't recognize you can't recognize they can't recognize
V-ing form
I can't be recognizing you can't be recognizing he can't be recognizing we can't be recognizing you can't be recognizing they can't be recognizing
Perfect
I can't have recognized you can't have recognized he can't have recognized we can't have recognized you can't have recognized they can't have recognized
V-ing perfect
I can't have been recognizing you can't have been recognizing he can't have been recognizing we can't have been recognizing you can't have been recognizing they can't have been recognizing
Interrogative form
Simple form
can I recognize? can you recognize? can he recognize? can we recognize? can you recognize? can they recognize?
V-ing form
can I be recognizing? can you be recognizing? can he be recognizing? can we be recognizing? can you be recognizing? can they be recognizing?
Perfect
can I have recognized? can you have recognized? can he have recognized? can we have recognized? can you have recognized? can they have recognized?
V-ing perfect
can I have been recognizing? can you have been recognizing? can he have been recognizing? can we have been recognizing? can you have been recognizing? can they have been recognizing?
Interro-negative form
Simple form
can't I recognize? can't you recognize? can't he recognize? can't we recognize? can't you recognize? can't they recognize?
V-ing form
can't I be recognizing? can't you be recognizing? can't he be recognizing? can't we be recognizing? can't you be recognizing? can't they be recognizing?
Perfect
can't I have recognized? can't you have recognized? can't he have recognized? can't we have recognized? can't you have recognized? can't they have recognized?
V-ing perfect
can't I have been recognizing? can't you have been recognizing? can't he have been recognizing? can't we have been recognizing? can't you have been recognizing? can't they have been recognizing?