I can recognize you can recognize she can recognize we can recognize you can recognize they can recognize
V-ing form
I can be recognizing you can be recognizing she can be recognizing we can be recognizing you can be recognizing they can be recognizing
Perfect
I can have recognized you can have recognized she 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 she can have been recognizing we can have been recognizing you can have been recognizing they can have been recognizing
Negation
Simple form
I cannot recognize you cannot recognize she cannot recognize we cannot recognize you cannot recognize they cannot recognize
V-ing form
I cannot be recognizing you cannot be recognizing she cannot be recognizing we cannot be recognizing you cannot be recognizing they cannot be recognizing
Perfect
I cannot have recognized you cannot have recognized she cannot have recognized we cannot have recognized you cannot have recognized they cannot have recognized
V-ing perfect
I cannot have been recognizing you cannot have been recognizing she cannot have been recognizing we cannot have been recognizing you cannot have been recognizing they cannot have been recognizing
Interrogative form
Simple form
can I recognize? can you recognize? can she recognize? can we recognize? can you recognize? can they recognize?
V-ing form
can I be recognizing? can you be recognizing? can she be recognizing? can we be recognizing? can you be recognizing? can they be recognizing?
Perfect
can I have recognized? can you have recognized? can she 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 she have been recognizing? can we have been recognizing? can you have been recognizing? can they have been recognizing?
Interro-negative form
Simple form
can I not recognize? can you not recognize? can she not recognize? can we not recognize? can you not recognize? can they not recognize?
V-ing form
can I not be recognizing? can you not be recognizing? can she not be recognizing? can we not be recognizing? can you not be recognizing? can they not be recognizing?
Perfect
can I not have recognized? can you not have recognized? can she not have recognized? can we not have recognized? can you not have recognized? can they not have recognized?
V-ing perfect
can I not have been recognizing? can you not have been recognizing? can she not have been recognizing? can we not have been recognizing? can you not have been recognizing? can they not have been recognizing?