I can memorize you can memorize he can memorize we can memorize you can memorize they can memorize
V-ing form
I can be memorizing you can be memorizing he can be memorizing we can be memorizing you can be memorizing they can be memorizing
Perfect
I can have memorized you can have memorized he can have memorized we can have memorized you can have memorized they can have memorized
V-ing perfect
I can have been memorizing you can have been memorizing he can have been memorizing we can have been memorizing you can have been memorizing they can have been memorizing
Negation
Simple form
I cannot memorize you cannot memorize he cannot memorize we cannot memorize you cannot memorize they cannot memorize
V-ing form
I cannot be memorizing you cannot be memorizing he cannot be memorizing we cannot be memorizing you cannot be memorizing they cannot be memorizing
Perfect
I cannot have memorized you cannot have memorized he cannot have memorized we cannot have memorized you cannot have memorized they cannot have memorized
V-ing perfect
I cannot have been memorizing you cannot have been memorizing he cannot have been memorizing we cannot have been memorizing you cannot have been memorizing they cannot have been memorizing
Interrogative form
Simple form
can I memorize? can you memorize? can he memorize? can we memorize? can you memorize? can they memorize?
V-ing form
can I be memorizing? can you be memorizing? can he be memorizing? can we be memorizing? can you be memorizing? can they be memorizing?
Perfect
can I have memorized? can you have memorized? can he have memorized? can we have memorized? can you have memorized? can they have memorized?
V-ing perfect
can I have been memorizing? can you have been memorizing? can he have been memorizing? can we have been memorizing? can you have been memorizing? can they have been memorizing?
Interro-negative form
Simple form
can I not memorize? can you not memorize? can he not memorize? can we not memorize? can you not memorize? can they not memorize?
V-ing form
can I not be memorizing? can you not be memorizing? can he not be memorizing? can we not be memorizing? can you not be memorizing? can they not be memorizing?
Perfect
can I not have memorized? can you not have memorized? can he not have memorized? can we not have memorized? can you not have memorized? can they not have memorized?
V-ing perfect
can I not have been memorizing? can you not have been memorizing? can he not have been memorizing? can we not have been memorizing? can you not have been memorizing? can they not have been memorizing?