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 can't memorize you can't memorize he can't memorize we can't memorize you can't memorize they can't memorize
V-ing form
I can't be memorizing you can't be memorizing he can't be memorizing we can't be memorizing you can't be memorizing they can't be memorizing
Perfect
I can't have memorized you can't have memorized he can't have memorized we can't have memorized you can't have memorized they can't have memorized
V-ing perfect
I can't have been memorizing you can't have been memorizing he can't have been memorizing we can't have been memorizing you can't have been memorizing they can't 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't I memorize? can't you memorize? can't he memorize? can't we memorize? can't you memorize? can't they memorize?
V-ing form
can't I be memorizing? can't you be memorizing? can't he be memorizing? can't we be memorizing? can't you be memorizing? can't they be memorizing?
Perfect
can't I have memorized? can't you have memorized? can't he have memorized? can't we have memorized? can't you have memorized? can't they have memorized?
V-ing perfect
can't I have been memorizing? can't you have been memorizing? can't he have been memorizing? can't we have been memorizing? can't you have been memorizing? can't they have been memorizing?